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ᙉᗘࢆᚓࡿࡇ࡜ࡀ࡛ࡁࡿ㸬⤖ᯝࡢㄽᩥ໬ࢆ㐍ࡵ࡚࠸ࡿ㸬ḟࡢᐇ㦂࡛ࡢᙉᗘᰯṇ࡟ࡘ࠸࡚ࡢ㆟ㄽࡶ⾜ࡗࡓ㸬ᖺ᭶࡟㛵すග⛉Ꮫ◊✲ᡤ࡟࠶ࡿ-.$5(13ࢆ⏝࠸࡚⾜࡞ࡗࡓㄏᑟࢥࣥࣉࢺࣥᩓ஘ࡢཎ⌮᳨ドᐇ㦂ࡢᙉᗘᰯṇ⏝ࡢࢹ࣮ࢱ㸬ୗᅗࡣୖᅗࡢ⅊ᶓ⥺ୖࡢࢫࣛ࢖ࢫࢆᅗ♧ࡋࡓࡶࡢ㸬ୗᅗࡢ⦪㍈ࡣῶග⋡࡟࡞ࡗ࡚࠸ࡿ㸬20㉸㧗ᙉᗘ࣮ࣞࢨ࣮࡜┦ᑐㄽࣉࣛࢬ࣐ࡢ㠀⥺ᙧ┦஫స⏝Ͷ‫ͤؖ‬Ζ◊✲
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6800$5<௔߶‫ౕک‬Ϫʖδʖ͹লࣻͶΓΕϕϧθϜ஦͹ుࢢԻౕ͗‫ٺ‬ଐͶ૮ଲ࿨྘ҮͶΉͲ৏তͤΖͳɾͪͳ͓ඉ૮ଲ࿨྘ҮͶ͕͏ͱϪʖδʖ͗‫׮‬સൕࣻ͠ΗΖΆʹ͹߶ືౕ͹ϕϧθϜͲ΍ɾϪʖδʖޭͺϕϧθϜ͹Ԡ਄͚ਃಃͤΖ͞ͳ͗Ն೵ͳ͵Εɾ͞͹ಝ੓ͺʰ૮ଲ࿨దಃ໎੓ʱͳ‫ͻݼ‬ΗΖɽຌ‫ڂݜ‬Ͳͺɾ૮ଲ࿨దಃ໎੓͗‫ݨ‬ஸͶ‫ݡ‬ΔΗΖ̐ͯ͹ॄ஄‫ݳ‬েͶηϛρφΝ౲ͱΖ͞ͳͶΓΕɾϪʖδʖͳ෼࣯ͳ͹૮‫༽ࡠޕ‬Ͷ͕͏ͱಋಝ੓͗ԍͣΖ॑གྷ͵ༀׄΝմ໎ͪ͢ɽ ྑᅗ࡟♧ࡍࡼ࠺࡟ࠊ✵㛫ⓗ࡟ศ᩿ࡉࢀࡓ࣮ࣞࢨ࣮ࣃࣝࢫิ࡟ᑐࡋ࡚ࠊ㟁ሙࡢ[ᡂศ࡜\ᡂศࡀࠊྛࠎࠊ᫬ィᅇࡾࠊ཯᫬ィᅇࡾ࡟࡞ࡿ
ࡼ࠺࡟ᵓᡂ࡛ࡁࡿࡇ࡜ࡀࢃ࠿ࡗࡓࠋ
),* ✵㛫ⓗ࡟ศ᩿ࡉࢀࡓ࣮ࣞࢨ࣮ࣃࣝࢫิ࡟ᑐࡋ࡚ࠊ
㟁ሙࡢ[ᡂศ࡜\ᡂศࡀࠊྛࠎࠊ᫬ィᅇࡾࠊ཯᫬ィᅇࡾ࡟࡞ࡿࡼ࠺࡟ᵓᡂ࡛ࡁࡿࡇ࡜ࡀࢃ࠿ࡗࡓࠋ
21㧗ᙉᗘ࠿ࡘ㧗ᘏᛶ࡞஧┦ࢼࣀ࣓ࣛࣛ㧗࢚ࣥࢺࣟࣆ࣮ྜ㔠ࡢ⾪ᧁᅽ⦰≉ᛶィ∦᱒೺Ⓩ1, L. E. Dresselhaus-Marais1, S. Irvine1, W. Chen2, J. Ren2, Y. K. Vohra3, ᑿᓮ඾㞞4, బ㔝Ꮥዲ51) Stanford University, USA, 2) University of Massachusetts Amherst, USA,
3) University of Alabama at Birmingham, USA, 4) ኱㜰኱Ꮫ኱Ꮫ㝔ᕤᏛ◊✲⛉, 5) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ
SUMMARY㔠ᒓ3Dࣉࣜࣥࢱ࣮࡛ࣉࣜࣥࢺࡉࢀࡓ஧┦ࢼࣀ࣓ࣛࣛᵓ㐀ࢆᣢࡘ㧗࢚ࣥࢺࣟࣆ࣮ྜ㔠AlCoCrFeNi2.1
ࡢ⾪ᧁᅽ⦰≉ᛶ࡟㛵ࡍࡿ◊✲⤖ᯝࢆሗ࿌ࡍࡿࠋ
ᮏᮦᩱࡣࠊᴟࡵ࡚㧗࠸ᙉᗘ࡜ᘏᛶࢆ୧❧࡛ࡁࡿࡇ࡜ࡀ᫂ࡽ࠿࡟࡞ࡗ࡚࠸ࡿࠋࡇࡢᮦᩱࡀ⾪ᧁᅽ⦰ୗ࡛࡝ࡢࡼ࠺࡞ᙉᗘኚ໬࡜ᘏᛶࢆ♧ࡍ࠿ࢆᐃ㔞ⓗ࡟ホ౯ࡍࡿࡇ࡜ࡣࠊ௒ᚋࡉࡽ࡟㧗࠸ᶵᲔⓗ≉ᛶࢆ♧ࡍ㧗࢚ࣥࢺࣟࣆ࣮ྜ㔠ࢆࢹࢨ࢖ࣥࡍࡿୖ࡛㔜せ࡞▱ぢࢆ୚࠼ࡿࠋ
ᮏᐇ㦂࡛ࡣࠊ⃭ගXIIྕࢆ⏝࠸࡚ヨᩱࢆ⾪ᧁᅽ⦰
ࡋࠊ㏿ᗘᖸ΅ィ ࢩࢫࢸ࣒VISAR࡟ࡼࡿࣘࢦࢽ࢜ィ ࢆ⾜ࡗࡓࠋࡑࡢ⤖ᯝࠊᮏᮦᩱࡢ⾪ᧁᅽ⦰≉ᛶィ ࢆ500 GPaࡲ࡛ィ ࡍࡿࡇ࡜࡟ᡂຌࡋࡓࠋࡇࡢ
ࣘࢦࢽ࢜ࢹ࣮ࢱࡣࠊX⥺⮬⏤㟁Ꮚ࣮ࣞࢨ࣮ࢆ⏝࠸
ࡓࡑࡢሙX⥺ィ ࡟࠾ࡅࡿᅽຊ᥎ᐃ࡟ᛂ⏝ࡉࢀࡿࠋᮏ◊✲ᡂᯝࡣࠊK. Katagiri, et al., J. Appl. Phys. 135,
095902 (2024) ࡟Ⓨ⾲ࡉࢀࡓࠋ

FIG. ィ ࡉࢀࡓAlCoCrFeNi2.1ࡢࣘࢦࢽ࢜࡜ࠊ඾ᆺⓗ࡞
VISAR⏬ീࠋపᅽഃࡢඛ⾜◊✲࡜ᩚྜᛶࡀぢࡽࢀࡿࠋ
300 K➼ ᭤⥺(◚⥺)࡜ࣘࢦࢽ࢜᭤⥺(ᐇ⥺)ࡢᕪࡣ⇕ᅽຊ࡟ࡼࡿࡶࡢࠋ
22㧗㉸ఏᑟ≀㉁ࡢ◲໬Ỉ⣲࡟㛵ࡍࡿ࣮ࣞࢨ࣮DACࣁ࢖ࣈࣜࢵࢻᅽ⦰ᐇ㦂ᴿỌⱸ฼1, ᑿᓮ඾㞞2,3, ➉ṓຍ೧2, ᱵ⏣ᝆᖹ4, ∦᱒೺Ⓩ5, ዟᆅᣅ⏕4, ඤ⋢஢♸2,31) ኱㜰኱Ꮫ኱Ꮫ㝔ᇶ♏ᕤᏛ◊✲⛉㸪 2) ኱㜰኱Ꮫ኱Ꮫ㝔ᕤᏛ◊✲⛉㸪3) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ㸪4) ி㒔኱Ꮫ」ྜཎᏊຊ◊✲ᡤ

SUMMARYࢲ࢖ࣖࣔࣥࢻ࢔ࣥࣅࣝࢭࣝ㸦DAC㸧࡟ࡼࡿỈ⣲໬≀ྜᡂ࡞࡝࡟࠾࠸࡚࢔ࣥࣔࢽ࢔࣎ࣛࣥ(NH3BH3)ࡀᗈࡃ⏝࠸ࡽࢀ࡚࠸ࡿ㸬ࣁ࢖ࣃ࣮࣮࣡ࣞࢨ࣮ࢆ⏝࠸ࡓ࣮ࣞࢨ࣮⾪ᧁᅽ⦰ᐇ㦂࡟ࡼࡾ㸪᭱኱ᅽຊ365
GPaࡲ࡛ࡢ㉸㧗ᅽࢹ࣮ࢱࢆୡ⏺࡛ึࡵ࡚ྲྀᚓࡋࡓ.
≉࡟㸪཯ᑕ⾪ᧁᅽ⦰㐣⛬100 GPa㉸ࡢప࢚ࣥࢺࣟ
ࣆ࣮≧ែ࡟࠾࠸࡚㸪ࣘࢦࢽ࢜᭤⥺ୖࡢ᣺ࡿ⯙࠸࡜ࡣ␗࡞ࡾ㸪཯ᑕ⋡ࡢ᭷ព࡞పୗࢆ᫂ࡽ࠿࡟ࡋࡓ. Ỉ⣲ΰྜ⣔࡛ࡣ㸪ศᏊ஋㞳ࡢࡢࡕ࡟㔠ᒓỈ⣲ࡀ⏕ᡂࡉࢀࡿ࡜⪃࠼ࡽࢀ࡚࠸ࡿ㸬ࡇࡢ㝿㸪Ỉ⣲ࡀ㉸࢖࢜ࣥⓗ࡟ẚ㍑ⓗ⮬⏤࡟᣺ࡿ⯙࠺“୙ΰ࿴≧ែ”ࡀᐇ⌧ࡉࢀ࡚࠸ࡿྍ⬟ᛶࡀ࠶ࡿ㸬ࡲࡓ⾪ᧁᅽຊࡀࡉࡽ࡟
ここにテキストを入力ୖ᪼ࡍࡿ࡜㸪඲࡚ࡢඖ⣲✀㛫ࡢ┦㛵ࡣ┦ᑐⓗ࡟ᆒ୍࡜࡞ࡾ㸪⣔ࡣ“ΰ࿴≧ែ”࡬࡜㌿ࡌࡿྍ⬟ᛶࡀ࠶ࡿ㸬ᮏ◊✲࡛ࡣ㸪➨୍ཎ⌮ศᏊືຊᏛἲࢆ⏝࠸࡚,
FIG. Ỉ⣲ࡢ┦ᅗ㸦McWilliams 2016㸧࡜࢔ࣥࣔࢽ࢔࣎ࣛ
࣑ࢡࣟ࡞ࢫࢣ࣮ࣝࡢほⅬ࠿ࡽ཯ᑕ⋡ࢆィ⟬ࡋ, ࣐ࢡࣥࡢࣘࢦࢽ࢜㸦㉥୸㸧࡜཯ᑕࢩࣙࢵࢡ≧ែ㸦⤃ୗ୕ゅ㸧ࣟ࡞⌧㇟࡛࠶ࡿ୙ΰ࿴࡟ࡘ࠸࡚⌮ゎࢆ㐍ࡵࡿணᐃ࡛࠶ࡿ.
23ࢼࣀ⛊⾪ᧁᅽ⦰㐣⛬࡟࠾ࡅࡿ≀ᛶ࡜⤖ᬗ⢏ࢧ࢖ࢬຠᯝ
ᑿᓮ඾㞞1,2, ᑠᑎᗣ༤3, ∦᱒೺Ⓩ4, ᱵ⏣ᝆᖹ5, ▱ሙ୍⯟1, ୰ᕝ⪷ᇶ1, ᨻᒸ㇦ὶ1, ዟᆅᣅ⏕5, ධ⯞ᚭ⏨6, ඤ⋢஢♸1,21) ኱㜰኱Ꮫ኱Ꮫ㝔ᕤᏛ◊✲⛉㸪2) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ㸪3) 㱟㇂኱Ꮫඛ➃⌮ᕤᏛ㒊㸪4) ࢫࢱࣥࣇ࢛࣮ࢻ኱Ꮫ㸪5) ி㒔኱Ꮫ」ྜཎᏊຊ◊✲ᡤ㸪6) ឡ፾኱Ꮫᆅ⌫῝㒊ࢲ࢖ࢼ࣑ࢡࢫ◊✲ࢭࣥࢱ࣮
SUMMARY㉸㧗ᅽୗࡢ≀㉁ࡢᅽ⦰≉ᛶࡀࠊ࣓ࢰࢫࢣ࣮ࣝࡢ≀㉁ᵓ㐀࡟ᙉࡃᙳ㡪ࢆཷࡅࡿྍ⬟ᛶࡀᐇ㦂ⓗ࡟᫂ࡽ࠿ࡉࢀࡘࡘ࠶ࡿࠋᮏ◊✲࡛ࡣࠊᖹᆒ⤖ᬗ⢏ᚄࡀ
⣙1 ȝmࡢ“࣑ࢡࣟከ⤖ᬗ͇ࢧࣇ࢓࢖࢔ヨᩱࢆ⏝࠸ࡓ࣮ࣞࢨ࣮㥑ື⾪ᧁᅽ⦰ᐇ㦂࡟ࡼࡾࠊ⤖ᬗ⢏⏺ࡀ⾪ᧁᅽ⦰≧ែ࡟୚࠼ࡿᙳ㡪ࢆㄪ࡭ࡓࠋ⾪ᧁ⼥ゎᅽຊ㸦~500 GPa㸧㏆ഐࡲ࡛ࡢᐇ㦂ࢹ࣮ࢱࢆୡ⏺࡛ึࡵ࡚ྲྀᚓࡋࠊ300 GPa௨ୖࡢ⾪ᧁᅽ⦰ࢹ࣮ࢱ࡟࠾࠸࡚
༢⤖ᬗ࡜ከ⤖ᬗヨᩱࡢ⾪ᧁᅽ⦰᭤⥺㸦ࣘࢦࢽ࢜㸧࡟᭷ព࡞ᕪࡀ࡞࠸ࡇ࡜ࡀࢃ࠿ࡗࡓࠋࡇࡢࡇ࡜࠿ࡽࠊ
ࡇࡢᅽຊᇦࡢࢧࣇ࢓࢖࢔࡟࠾࠸࡚ࡣࠊⅣ⣲㸦ࢲ࢖ࣖࣔࣥࢻ㸧࡛㢧ⴭ࡟ぢࡽࢀࡓࡼ࠺࡞⤖ᬗ⢏⏺ᙉ໬ຠᯝࡀᑠࡉ࠸ࡇ࡜ࡀ♧၀ࡉࢀࡓࠋ୍᪉ࠊ150-250
GPaࡢᅽຊ㡿ᇦࢆ≺ࡗ࡚ᐇ᪋ࡋࡓX⥺ᅇᢡほᐹࡢ⤖ᯝ࠿ࡽࡣࠊࢧࣇ࢓࢖࢔⤖ᬗ᱁Ꮚ࡟ᑐࡋ࡚⣙5-12%⛬ᗘࡲ࡛ࡢᅽ⦰㠀➼᪉ᛶࡀ☜ㄆࡉࢀࠊ࣑ࢡࣟࣥࢧ
࢖ࢬࡢ⢏ᚄ࡟ࡼࡿᙉ໬ຠᯝࡀ⌧ࢀࡿྍ⬟ᛶࡀ࠶ࡿࡇ࡜ࡀࢃ࠿ࡗࡓࠋ

24

FIG. ࣮ࣞࢨ࣮ࢩࣙࢵࢡᐇ㦂࡛ᚓࡽࢀࡓከ⤖ᬗࢧࣇ࢓࢖
࢔ࡢ⾪ᧁᅽ⦰ࢹ࣮ࢱ㸦solid㸧࡜ࠊ㐣ཤࡢ༢⤖ᬗࢧࣇ࢓࢖
࢔ࢹ࣮ࢱ࡜ࡢẚ㍑ࠋ➨୍ཎ⌮ィ⟬ࡢ⤖ᯝ㸦ኴⅬ⥺㸧ࡶྠᵝ࡟♧ࡋࡓࠋ

ᴟ㉸㧗㏿⾪✺ࢩ࣑࣮ࣗࣞࢩࣙࣥᐇ㦂࡟ࡼࡿᅛయᚤ⢏Ꮚᤕ㞟ᶵᵓࡢᇶ♏㛤Ⓨ (4)▮㔝๰1,6㸪㛗཭ⱥኵ2 㸪బ㔝Ꮥዲ2 ࠊ୰ᮧᾈ㝯3 ࠊᑿᓮ඾㞞3 ࠊ⏣➃ㄔ4 㸪ᖹ஭㝯அ5 㸪୰⃝῟୍㑻61) Ᏹᐂ⯟✵◊✲㛤ⓎᶵᵓᏱᐂ⛉Ꮫ◊✲ᡤ㸪2) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ, 3) ኱㜰኱Ꮫ኱Ꮫ㝔ᕤᏛ◊✲⛉,4) ༓ⴥ኱Ꮫ, 5) ༓ⴥᕤᴗ኱Ꮫ, 6)⥲ྜ◊✲኱Ꮫ㝔኱Ꮫ
SUMMARYᾏὒኳయࣉ࣮࣒ࣜࣗ➼ࡢࡑࡢሙศᯒࡸヨᩱ᥇ྲྀࢆ┠ᣦࡋࠊ  NPV௨ୖࡢ㉸㧗㏿ᗘࡢᚤ⢏Ꮚ⾪✺࡟┦ᙜࡍࡿ࢚ࢿࣝࢠ࣮ࡢᐇ
㦂⣔ࡢᵓ⠏࡜ࠊ  ⾪✺⏕ᡂ≀࠿ࡽ≀㉁᝟
ሗࢆᚓࡿᶵᵓࡢᇶ♏㛤Ⓨࢆ⾜ࡗ࡚࠸ࡿࠋ
ᖺᗘ࡟ࡣࠊ࣮ࣞࢨ࣮⏝ᩘ್ὶయィ⟬ࢥ࣮ࢻ࡟ࡼࡿ㉸㧗㏿⾪✺ࡢ෌⌧ࢆ┠ᣦࡋࠊᝨᫍ⛉Ꮫ୺యࡢL6$/(ࢥ࣮ࢻࡢィ⟬⤖ᯝࢆࠊ
6KULQH ,FDUXV ࡢᐇ㦂ࢹ࣮ࢱ࡜⾪✺᫬ࡢࣆ࣮ࢡᅽຊࡢほⅬ࠿ࡽẚ㍑ࡋࡓࠋࡑࡢ
⤖ᯝࠊ⢏ᚄࡀᑠࡉ࠸࡯࡝⇕ᣑᩓࡢᙳ㡪࡛⾪✺㠃ࡢᅽຊࡀୗࡀࡾࠊᄇฟࡉࢀࡿ⏺㠃ࡢゅᗘ᪉ྥ࡟ࡶ㐪࠸ࡀ⌧ࢀࡓࠋࡲࡓ┿✵⣸እග࡟ࡼࡿ᭷ᶵ≀࢞ࢫࡢග࢖
࢜ࣥ໬ᐇ㦂⣔ࡢ⤌❧ࢆ㛤ጞࡋࡓࠋ㟁ᴟࠊ᳨
ฟჾࠊUVࣛࣥࣉࠊ㧗ᅽ㟁※ࡢㄪᩚࢆ᏶஢ࡉ
ࡏࠊṧ␃࢞ࢫࡢ࢖࢜ࣥ໬ಙྕࢆ᳨ฟࡋࡓࠋ

ʴή૧಍೘‫ܨ‬࿑ʵώϩϔʶ
8mmοϣʖϔΠξϕν

ਇ‫ۯ‬
ΰʖζ

ϛϱϕ
΃

ు‫ۅ‬ʶ
‫ݗ‬ड़‫ح‬ΠϩϝωΤϞ
ώρή
UV೘ࣻ޳),*L6$/(࡟ࡼࡿ㉸㧗㏿ᚤ⢏Ꮚࡢ┤ᚄ࡜ࣆ࣮ࢡᅽຊࡢ㛵ಀ㸦ୖᕥ㸸PPᚄࠊୖྑPPᚄ㸧ࠋ᭷ᶵ≀࢞ࢫࡢග࢖࢜ࣥ
໬ᐇ㦂⣔ࡢࢭࢵࢺ࢔ࢵࣉ㸦ୗྑ㸧࡜࢞ࢫᑟධ๓ࡢࢳࣕࣥ
ࣂ࣮ෆṧ␃࢞ࢫࡢ࢖࢜ࣥ໬᫬ࡢಙྕ౛ ୗᕥ㸧ࠋ25

ኳయ⾪✺᫬࡟࠾ࡅࡿ㔠ᒓ/ࢣ࢖㓟ሷศ㞳㐣⛬ࡢゎ᫂ቃᐙ㐩ᘯ1, ⚄ᇉ㑈1, ᐑᕝᜨ㍜1, ㏆⸨ᛅ1, 㔜᳃ၨ௓21) ኱㜰኱Ꮫ኱Ꮫ㝔⌮Ꮫ◊✲⛉, 2) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ

SUMMARY⃭ගIIྕ࣮ࣞࢨ࣮⿦⨨ࢆ౑⏝ࡋ࡚ࠊ࣮ࣞࢨ࣮⾪ᧁᅇ཰ᐇ㦂ࢆ⾜ࡗࡓࠋᅇ཰ヨᩱෆ㒊ࡢ㟁Ꮚ㢧ᚤ㙾⏬ീ࠿ࡽ✵㝽⋡ࡸ⢏Ꮚᩘ࡞࡝ࡢゎᯒࢆ⾜ࡗࡓ㸦ᅗཧ↷㸧ࠋ㕲ྜ㔠ࡢ࢔ࢫ࣌ࢡࢺẚ࡟ࡘ࠸࡚ࡣࠊࡍ࡭
࡚ࡢヨᩱ࡛ᅽᐦ࡟ࡼࡿ࡜ᛮࢃࢀࡿFeSࡢᡥᖹࡀ☜ㄆࡉࢀࡓࠋẚ㍑ⓗⓎ⏕ᅽຊࡀ㧗࠸࡜⪃࠼ࡽࢀࡿヨᩱୖ㒊࡛ࡣࠊึᮇ ᗘࡢୖ᪼࡟కࡗ࡚ࠊ FeSࡢ࢔ࢫ࣌ࢡࢺẚࡶῶᑡࡍࡿ࡜࠸ࡗࡓ⤖ᯝࡀぢࡽࢀࡓࠋࡇࡢ⤖ᯝ࠿ࡽࠊ㝹▼ẕኳయࡢึᮇ ᗘࡣࠊኳయ⾪✺᫬ࡢ FeSࡢኚᡂ࡞࡝࡟ᙳ㡪ࢆ୚࠼ࡿࣃ࣓࣮ࣛࢱ
࡟࡞ࡾ࠺ࡿ࡜⪃࠼ࡽࢀࡿࠋ

FIG. ึᮇ ᗘ1000K࡛ࡢ࣮ࣞࢨ࣮⾪ᧁᅇ཰ヨᩱࡢ㟁Ꮚ㢧ᚤ㙾⏬ീ(ᕥ)࡜⾪ᧁⅬ┤ୗ(࣮ࣞࢨ࣮↷ᑕ㒊௜㏆)࠿ࡽヨᩱ῝㒊᪉ྥ࡬ࡢヨᩱࡢ✵㝽⋡ࠊ㕲ྜ㔠ࡢ⢏Ꮚᩘࠊ㕲ྜ㔠⢏Ꮚࡢᡥᖹᗘྜ(࢔ࢫ࣌ࢡࢺẚ)ࡢኚ໬ࠋ
26

Megatesla ultra-high magnetic field generation driven by high-intensity laser implosion
H. Morita1, K. F. F. Law2, Z. Berkson2, I. Kunz2, Y. Abe2, R. Takizawa2, T. Tsuido2,
H. Matsubara2,Y. Karaki2, D. K. Balsu2, M. Murakami2, and S. Fujioka2
1) Utsunomiya University, Japan, 2) Institute of Laser Engineering, Osaka University, JapanSUMMARY
In this research, we have demonstrated the microtube
implosion, which may offer Megatesla a high magnetic
field driven by a high-intensity laser. Our measurements
show that the magnetic field of 10 kT, which is 50 times
higher than the seed magnetic field, was generated byusing the LFEX facility. This result is supported by two
proton measurements as shown in the right figures:protonradiography andangular distribution
measurement of the accelerated protons. The megateslamagnetic field generation will allow us to observe
phenomena that cannot be achieved on a laboratory
scale such as non-linear Zeeman splitting, Lorentz
ionization, and Landau levels. We are sure that our
results contribute to the high-energy-density plasma
fields in the future.

FIG.
G Two proton measurements: ((a-1)1) proton radiography
di
h and
d
(b) angular distribution measurement of the accelerated
protons. Acomparison between the seed field (a-2) and theamplified field (a-3) shows a clear difference indicating thehigh magnetic field generation. The angular measurementshows that the accelerated proton was deflected to 90 deg.
from the incident laser axis. This result indicates that thegenerated magnetic field was at least 10 kT.
27

Ultrafast dynamics of critical density surfaces due torelativistic radiation pressure sustained for multi-picoseconds
Sadaoki Kojima1 and Shinsuke Fujioka2
1) Kansai Institute for Photon Science, QST, Japan 2) Institute of Laser Engineering, Osaka University, JapanSUMMARY

FIG.1

In this study, we present a design and demonstration
results for a new single-shot FROG system and opticaltransport system for characterizing the instantaneous
intensity and phase at the LFEX laser facility. At LFEX,
the laser intensity at the vacuum window is intrinsicallyhigh because of two unique properties, namely, the large
F-number of the off-axis parabolic mirror and the small
radius of the interaction chamber. Consequently, to obtainan accurate FROG trace, attention must be paid tospectrum modulation due to self-phase modulation. The
appropriate laser intensity for FROG operation wasinvestigated experimentally, and an optical transportsystem with an energy attenuator composed of reflective
optics was designed to eliminate the concern of spectrum
modulation from measurements. A FROG trace recorded
at LFEX shot with 161 J energy was reconstructed 100
times using an iterative phase-retrieval algorithm. Despitesome differences in structure, the reconstructed spectrum
agrees reasonably well with the spectrum obtained by atime-integrated spectrometer.

FIG.2

FIG.1 Schematic of optical transport system for characterizing
instantaneous intensity and phase of light that is specularly reflectedfrom supra-critical density targets at full-power operation.
FIG.2 (a) Experimental PG-FROG trace (b) FROG traces retrieved using
an iterative phase-retrieval algorithm.
28࣐࢖ࢡࣟࢳ࣮ࣗࣈ⇿⦰࡟ࡼࡿ࣓࢞ࢸࢫࣛ☢ሙ⏕ᡂ
Fernando Rubio Garcia1㸪ᮧୖ໷ୟ21) ࣟࢳ࢙ࢫࢱ࣮኱Ꮫ㸦LLE)㸪2) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ

SUMMARY࣓࢞ࢸࢫࣛ⣭ࡢ㉸㧗☢ሙࡀ࣑ࢡࣟࣥࢫࢣ࣮ࣝࡢ
ᴟᑠ✵㛫࡛ࠊࡋ࠿ࡶᩘ༑ࣇ࢙࣒ࢺ⛊࡜࠸࠺㉸▷᫬㛫ࡢ㛫࡟ኚ໬ࡍࡿ࡜ࠊࣇ࢓ࣛࢹ࣮ࡢἲ๎(ѭʹ(ѸG%GW ࡟ᚑࡗ࡚ࠊᙉ኱࡞㟁ሙࢆⓎ⏕ࡉࡏࡿࡇ࡜ࡀ
ྍ⬟࡜࡞ࡿࠋᮏ◊✲ࡢ┠ⓗࡣࠊ㉸㧗ᙉᗘ࣮ࣞࢨ࣮
↷ᑕᚋ࡟ࣉࣛࢬ࣐ࡢ⇿⦰࡟ࡼࡗ࡚୰ᚰ㍈ୖ࡟⏕ࡌࡿᴟ㉸㧗☢ሙ⎔ቃୗ࡟࠾࠸࡚ࠕⓒ࣑ࢡࣟࣥࢫࢣ࣮
࡛ࣝGeV㸦ࢠ࢚࢞ࣞࢡࢺࣟࣥ࣎ࣝࢺ㸧⣭ࠖࡢ㉸ࢥࣥࣃࢡࢺ࡞⢏Ꮚຍ㏿ჾࢆᐇ⌧ࡍࡿࡓࡵࡢ⌮ㄽタィࢆ⾜࠺ࡇ࡜࡛࠶ࡿࠋྑᅗ࡟♧ࡍࡼ࠺࡟ࠊࢱ࣮ࢤࢵ
ࢺෆ㒊࡟ࢱ࣮ࣅࣥᵝࡢᚤ⣽ᵓ㐀ࢆᣢࡓࡏࡿ࡜ࠊ୍
ᐃ᪉ྥࡢ┦ᑐㄽⓗ࢚ࢿࣝࢠ࣮ࢆᣢࡘ㟁Ꮚ ὶࡀ୰ᚰ㒊࡟㉳ࡇࡾࠊ⤖ᯝ࡜ࡋ࡚㉸㧗☢ሙ⏕ᡂࣉࣟࢭࢫ
ࢆ⡆༢໬࡛ࡁࡿࡇ࡜ࡀࢃ࠿ࡗࡓࠋ
FIG. ࢱ࣮ࢤࢵࢺෆ㒊࡟ࢱ࣮ࣅࣥᵝࡢᚤ⣽ᵓ㐀ࢆᣢࡓࡏࡿ࡜ࠊ୍ᐃ᪉ྥࡢ┦ᑐㄽⓗ࢚ࢿࣝࢠ࣮ࢆᣢࡘ㟁Ꮚ ὶࡀ୰ᚰ㒊࡟㉳ࡇࡾࠊ⤖ᯝ࡜ࡋ࡚㉸㧗☢ሙ⏕ᡂࣉࣟࢭࢫࢆ⡆༢໬࡛ࡁࡿࡇ࡜ࡀࢃ࠿ࡗࡓࠋ
29

࣮ࣞࢨ࣮㥑ື୰ᛶᏊ࡟ࡼࡿᜏᫍෆඖ⣲ྜᡂࡢ◊✲᪩ᕝᓅே1㸪వㄒぬᩥ2 㸪᭷ᕝᏳಙ2 㸪ᕴ ‪ኴ2, Lan Zechen2 㸪 Wei Tianyun21) 㔞Ꮚ⛉Ꮫᢏ⾡◊✲㛤Ⓨᶵᵓ㸪2) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ

SUMMARY

Intermediate states
Excitation

176Luࡣ⣙3.71010 ᖺࡢ༙ῶᮇ࡛ 176Hf࡟ȕᔂቯࡍ

Deexcitation

Neutron1ࡿᏱᐂ᰾᫬ィ࡜ࡋ࡚▱ࡽࢀ࡚࠸ࡿࠋ㝹▼◊✲࡛ࠊ୍㒊ࡢ㝹▼࡛༙ῶᮇࡀ▷ࡃ࡞ࡿ⌧㇟ࡀⓎぢࡉࢀࠊኴ㝧⣔ᙧᡂࡢึᮇ࡟࠾࠸࡚ᮍゎ᫂ࡢᏱᐂⓗ⌧㇟ࡀⓎ⏕ࡋࡓ࡜⪃࠼ࡽࢀࡿࠋᡃࠎࡣ㧗࢚ࢿࣝࢠ࣮Ᏹᐂ
⥺ࡢ2ḟ୰ᛶᏊ࡟ࡼࡿຍ㏿ᔂቯࢆᥦ᱌ࡋ࡚࠸ࡿࠋࡑ
ࡇ࡛ࠊLFEX࣮ࣞࢨ࣮ࢆヨᩱ࡟㞟ගࡋ୰ᛶᏊࢆ⏕ᡂ
ࡋࠊLuヨᩱ࡬ࡢ↷ᑕᐇ㦂ࢆ⾜ࡗࡓࠋ࣮ࣞࢨ࣮࡛ࡣ
ୡ⏺᭱㧗ࢡࣛࢫࡢ࣮ࣞࢨ࣮㥑ື୰ᛶᏊࢆ⏝࠸࡚ࠊ
176Lu࡟ᑐࡋ࡚ᇶᗏ≧ែ࠿ࡽ᰾␗ᛶయ࡬ࡢ㑄⛣ࡀ㉳ࡁࡿࡇ࡜ࢆᐇ㦂ⓗ࡟᳨ドࡋࡓࠋ

Isomer7
176Lu
Q ȕ= 1192.8 keV
Q EC= 106.2 keV

Ground stateȕdecay
0.34%
8+99.66%

401.0 keV
0.329

6+

306.8 keV
944+201.8 keV
2+
0+
176Hf

86

88.3 keV
13.3

FIG. 㧗࢚ࢿࣝࢠ࣮Ᏹᐂ⥺ࡢ᰾◚○཯ᛂ➼࡛⏕ᡂࡉࢀࡓ୰ᛶᏊ࡟ࡼࡿᏱ᰾᰾᫬ィ 176Luࡢຍ㏿ᔂቯࡢ࣓࢝ࢽࢬ࣒
ࡢᴫᛕᅗࠋᇶᗏ≧ែ࠿ࡽ୰ᛶᏊࡢ㠀ᙎᛶᩓ஘࡟ࡼࡗ࡚࢔
࢖ࢯ࣐࣮࡟㑄⛣ࡋ⥆ࡅ࡚ᙺ3.7᫬㛫ࡢ༙ῶᮇ࡛ȕᔂቯࡍࡿࠋ30

A novel acceleration mechanism for quasi-mono energetic deuterons driven by laser accelerated protons
and its application as a D-D neutron source
T.Wei , A. Yogo, et al.
ILE, Osaka Univ.
SUMMARY
We conducted laser quasi-mono energetic deuteronacceleration experiments with heavy water capsules.
By changing the experiment conditions withchanging the target set-up and laser parameters, we
figured out that deuterons are accelerated from theheavy water leaked into the vacuum.
And then we repeat the experiment several times indifferent conditions, quasi-mono energetic deuterons
are successfully detected under different conditions
with different detectors.
Sets of experimental results supporting
acceleration mechanism are obtained successfully.

theFIG. Picture of heavy water capsule target. Heavy water isconfirmed leaked from the capsule into vacuum as deuteronsource.

[1]T. Wei, et al. Nuclear Phonics 2023,oral presentation.
[2]T. Wei, et al. C05-19a-VII-03 The 44th Annual Meeting of LSF.
[3] T. Wei, et al. Paper being submitted31ࢡࣛ࢖࢜෭༷⣧⢋Ỉ⣲ⷧ⭷࡟ࡼࡿ㧗ຠ⋡࢖࢜ࣥຍ㏿ࡢᐇド◊✲௦⾲⪅: ᒾᮏ ᫭ྐཷධᩍဨ㸸వㄒ ぬᩥ*᰾⼥ྜ⛉Ꮫ◊✲ᡤࠊ *኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ

SUMMARY௒ᖺᗘࡣᅛయỈ⣲ⷧ⭷⏕ᡂ⿦⨨ࡢ◊✲㛤Ⓨ࡜࣮ࣞࢨ࣮ຍ㏿ᐇ㦂ࢆ⾜ࡗࡓࠋ๓ᖺᗘ࡛ࡣࠊᅛయỈ⣲ⷧ⭷⏕ᡂ⿦⨨ࡢⷧ⭷ᙧᡂ㒊ࢆྲྀࡾᅖࡴẼᐦᵓ㐀ࢆኚ᭦ࡋࡓࠋẼᐦᮦᩱࢆ࢖
ࣥࢪ࣒࢘ࢩ࣮ࢺ࠿ࡽ࢖ࣥࢪ࣒࢘Oࣜࣥࢢ࡬࡜ኚ᭦
ࡋࠊẼᐦᵓ㐀ࡢ」ᩘᅇࡢ㛤㛢ᚋࡶẼᐦᛶࢆ⥔ᣢࡍࡿࡇ࡜ࡀྍ⬟࡟࡞ࡗࡓࠋ௒ᖺᗘࡣⷧ⭷ࡢཌࡉࢆไ
ᚚࡍࡿࡓࡵ࡟ࠊⷧ⭷ᙧᡂ㒊ࡢ࢜ࣜࣇ࢕ࢫᵓ㐀ࢆᨵ㐀ࡋࡓࠋᩘ༑ੇ࠿ࡽᩘⓒੇཌࡉࡢⷧ⭷⏕ᡂ࡟ᡂຌࡋࡓࠋࡑࡢ㛤Ⓨࡋࡓ⿦⨨ࢆ౑⏝ࡋ࡚ࠊ࣮ࣞࢨ࣮ຍ㏿ᐇ㦂ࢆ⾜ࡗࡓࠋ࣮ࣞࢨ࣮ᐇ㦂࡛ࡣࠊᅛ໬ ᗘࡀ㍍Ỉ⣲࡟ẚ࡭࡚㧗ࡃᡂ⭷ࡋࡸࡍ࠸㔜Ỉ⣲ࢆ౑⏝ࡋࡓࠋ⏕ᡂࡉࢀࡓᅛయ㔜Ỉ⣲ⷧ⭷ࡢཌࡉࡢ௚ࠊ࣮ࣞࢨ࣮
ࡢࣃ࣓࣮ࣛࢱࢆኚ࠼࡚࣮ࣞࢨ࣮㥑ື⢏Ꮚຍ㏿ᐇ㦂ࢆᐇ᪋ࡋࢹ࣮ࢱࢆ཰㞟ࡋࡓࠋ

Thickness of D2 aȝP

FIG. 1 50ȝP॑ਭોമຜΝ༽͏ͪLFEXϪʖδʖͶΓΖ㔜㝧Ꮚຍ㏿ᐇ㦂ࡢࢭࢵࢺ࢔ࢵࣉࠋTPIS୕ྎࢆタ⨨ࡋ࡚ࠊຍ㏿ࡉࢀࡓ㔜㝧Ꮚࢆィ ࡍࡿࠋ[1]T. Wei et al. 21pB2-7᪥ᮏ≀⌮Ꮫ఍ 2024᫓Ꮨ኱఍
[2] T. Wei et al. ㄽᩥᢞ✏୰
32

0HDVXUHPHQWRIODVHUGULYHQPDJQHWLFILHOGE\PHDQVRIQHXWURQGLIIUDFWRPHWU\
᭷ᕝᏳಙ1ࠊᒣ⏣㱟ᘺࠊᕴຬኴࠊ:HL7LDQ\XQ ࠊ/DQ=HFKHQ ࠊ$OHVVLR0RUDFH ࠊవㄒぬᩥࠊ⸨ᒸៅ௓ࠊᏳ㒊ຬ㍤2ࠊబ⸨㏱3ࠊᐑす⪃୍㑻4ࠊ1) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤࠊ2)኱㜰኱ᏛᕤᏛ◊✲⛉ࠊ3)኱㜰኱Ꮫ᰾≀⌮◊✲ࢭࣥࢱ࣮ࠊ4)኱㜰኱Ꮫᇶ♏ᕤᏛ◊✲⛉SUMMARYࣁ࢖ࣃ࣮࣮࣡ࣞࢨ࣮ࢆ⏝࠸ࡓࣉࣛࢬ࣐⏕ᡂᐇ㦂࡟࠾࠸࡚ࠊ
㧗ᐦᗘࣉࣛࢬ࣐୰࡟kT⣭ࡢ㧗ᙉᗘ࡛ࠊȝP⣭ࡢᑠࡉ࠸㡿ᇦࡢ☢ሙࢆⓎ⏕ࡉࡏࡿࡇ࡜ࡀྍ⬟࡜࡞ࡗ࡚ࡁࡓࠋࡋ࠿ࡋ࡞ࡀ
ࡽࠊࡑࡢ☢ሙࢆ┤᥋ィ ࡍࡿᡭἲࡀᏑᅾࡋ࡞࠿ࡗࡓࠋ୰ᛶ
Ꮚࡣ☢Ẽ࣮࣓ࣔࣥࢺࢆᣢࡘࡓࡵ☢ሙ࡟ἢࡗ࡚᭤ࡀࡿࡓࡵࠊ
୰ᛶᏊࡢ೫ྥゅ࠿ࡽ☢ሙࢆィ ࡍࡿࡇ࡜ࡀ࡛ࡁࡿࠋࡋ࠿ࡋ
࡞ࡀࡽ୰ᛶᏊࡢ☢ሙ࡟ࡼࡿ೫ྥゅࡣᑠࡉࡃࠊࡇࢀࡲ࡛ほࡍࡿࡢࡀᅔ㞴࡛࠶ࡗࡓࠋ⇕୰ᛶᏊ࡟ᑐࡋ࡚ࠊ☢ሙ໙㓄ࡀ
1007P࡛㛗ࡉ100P⛬ᗘᏑᅾࡍࡿ᫬࡟0.002radࡢ೫ྥゅᗘ࡛ࠊୖୗ୰ᛶᏊࢫࣆࣥ࡟ࡼࡗ࡚୰ᛶᏊࣅ࣮࣒ࡣ2ࡘ࡟ศ㞳ࡉ ࢀ ࡿ ࠋ LFEX ࡜ ⃭ ග XII ྕ ࢆ ⏝ ࠸ ࡓ ᐇ 㦂 ࡀ ⾜ ࢃ ࢀ ࡓ ࠋ
LFEX ࡛ X ⥺ ࢆ Ⓨ ⏕ ࡉ ࡏ ࡚ ࠊ ࡑ ࡢ X ⥺ ࢆ 㔜 Ỉ ⣲ ࡟ ᙜ ࡚ ࡚
J+d=n+p཯ᛂ࡟ࡼࡗ࡚୰ᛶᏊࢆⓎ⏕ࠊࡑࡢ୰ᛶᏊࡢ୰࠿ࡽ
⇕୰ᛶᏊࡔࡅࢆ㑅ᢥࡋ࡚฼⏝ࡋࡓࠋLFEXࡢ1μsᚋࠊ⇕୰ᛶᏊࡀ㣕ࢇ࡛ࡃࡿ᫬้࡟⃭ගXIIྕࢆ↷ᑕࡋࠊ☢ሙࢆⓎ⏕ࡉࡏࠊ☢ሙ୰ࢆ㏻㐣ࡋࡓ୰ᛶᏊࡢ᭤ࡀࡾゅࢆィ ࡋࡓࠋィ
࡟ࡣLi-6ⷧ⭷ࢆࡘࡅࡓCR-39ࢆ⏝࠸ࠊ⇕୰ᛶᏊࢆ㑅ᢥⓗ࡟ィ ࡋࡓࠋᅗ࡟♧ࡍࡢࡣ୰ᛶᏊࣅ࣮࣒ࣃࢱࣥ࡜ࣛ࢖ࣥࣉࣟ
ࣇ࢓࢖࡛ࣝ࠶ࡿࠋ☢ሙ࡟ࡼࡾ୰ᛶᏊࡣ⏬㠃ᕥྑ᪉ྥ࡟ศ㞳ࡍࡿࢭࢵࢺ࢔ࢵࣉ࡟࡞ࡗ࡚࠸ࡿࠋண ㏻ࡾᕥྑ࡟ศ࠿ࢀࡓ
ಙྕࡀᚓࡽࢀࡓࠋ␗࡞ࡿࢱ࢖࣑ࣥࢢ࡛ࡢࢩࣙࢵࢺࢹ࣮ࢱࡶ
ྲྀᚓࡋ࡚࠸ࡿࠋࡇࢀࡽࢆゎᯒࡍࡿࡇ࡜࡛☢ሙࢆᑟฟࡍࡿࡇ
࡜ࡀ࡛ࡁࡿࠋ
33

ୖࠊLFEX+⃭ගXIIྕᐇ㦂࡛ᚓࡽࢀࡓ୰ᛶᏊࡢ2ḟඖศᕸࠋ㟷Ⅼࡑࢀࡒࢀࡀ୰ᛶᏊࡢಙྕࠋY᪉ྥࡢ1.2FPࢆX᪉ྥ࡟ࣛ࢖ࣥࣉࣟࣇ࢓
࢖ࣝࡋࡓࡶࡢࡀୗᅗࠋࢱ࣮ࢤࢵࢺୖࢆ㏻㐣ࡍࡿ୰ᛶᏊࡀ㣕⾜ࡋࠊᕥྑ᪉ྥ࡟ศ㞳ࡍࡿࠋᐇ㦂⤖ᯝ࠿ࡽ᫂ࡽ࠿࡞୰ᛶᏊศᕸࡢศ㞳ࡀぢࡽࢀࡓࠋ⌧ᅾ☢ሙࡢヲ⣽ࢆゎᯒࡋ࡚࠸ࡿࠋDevelopment of short-pulsed point neutron sources using ultra-high intensity lasers
Y. Abe1,2, R. Matsuura1, K. Iwasa1, T. Minami1, K. Oda1, S. Suzuki1, F. Nikaido1,
T. Yasui1, Y. Ueyama1, H. Habara1,2, S. Fujioka2, and Y. Kuramitsu1,2,
1) Graduate School of Engineering, Osaka University, Japan, 2) Institute of Laser Engineering, Osaka University, JapanSUMMARY(a) PIC simulation results for the “inverted corona” fusion driven by LFEX

The "inverted-corona" fusion scheme has been
investigated as an alternative approach to ICF withimproved robustness to significant laser-drive
asymmetry. The scheme is based on the laser irradiation
inside a hollow target, that allows to produce extremely
hot plasma corona (>10 keV) with a diameter of lessthan 100 Pm even with one-sided laser illumination.
Our previous experiments have demonstrated therobustness of this scheme using near-monodirectional
nanosecond laser beams, as well as significant neutron
yield enhancement using the picosecond laser, LFEX.
This year, we made the first attempt at source size
evaluation using neutron imaging. As shown in the rightfigure, the size of neutron sources could be estimatedfrom the spatial resolution of the edge of the shadow.
The measurement was partially successful and showed
several issues to be addressed to improve the spatial
resolution and signal-to-noise ratio. This will be ourmain subject next year.

(b) Neutron source size measurementby neutron radiography

(b2)

(b1)
(b3)

FIG. (a) PIC simulation results for the “inverted corona”
fusion driven by LFEX, (b1) setup for neutron radiography forsource size measurement, (b2) obtained shadow image of 5mm thick plastic and irons, (b3) line profile of the shadow.
34

Laser driven polarized neutron generation and proof of principle of high magnetic field measurement
᭷ᕝᏳಙ1ࠊᕴຬኴ1 ࠊWei Tianyun 1 ࠊLan Zechen 1 ࠊAlessio Morace 1 ࠊవㄒぬᩥ1 ࠊ
⸨ᒸៅ௓1 ࠊᏳ㒊ຬ㍤2ࠊబ⸨㏱3ࠊ㒆 ⱥ㍤3, ໭ᕝ຾ᾈ4, ᰿᮶ㄔ4, 㤶ᕝ᫭ᚨ4, ᐑす⪃୍㑻4ࠊ1) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤࠊ2)኱㜰኱ᏛᕤᏛ◊✲⛉ࠊ3)኱㜰኱Ꮫ᰾≀⌮◊✲ࢭࣥࢱ࣮ࠊ4)኱㜰኱Ꮫᇶ♏ᕤᏛ◊✲⛉SUMMARYᮏㄢ㢟ࡣ2022ᖺᗘ࡟⿦⨨ࢺࣛࣈࣝ࡟ࡼࡾࢩࣙࢵࢺࡀ࡛ࡁ࡞
࠿ࡗࡓࡓࡵ2023ᖺᗘ࡟ᘏᮇࡋ࡚ᐇ᪋ࡉࢀࡓࡶࡢ࡛࠶ࡿࠋ
100%ࢫࣆࣥ೫ᴟࡋࡓ୰ᛶᏊࣅ࣮࣒ࡣ୰ᛶᏊᛂ⏝࡟࠾࠸࡚㠀ᖖ࡟㔜せ࡞ࢶ࣮ࣝ࡜࡞ࡿࠋᚑ᮶ࡢࢫࣆࣥ೫ᴟ୰ᛶᏊࡣࠊ
ຍ㏿ჾ➼࡛Ⓨ⏕ࡉࡏࡓ⇕୰ᛶᏊࢆࠊ 3Heࢫࣆࣥࣇ࢕ࣝࢱ࣮
࡜࿧ࡤࢀࡿ኱᥃࠿ࡾ࡞⿦⨨ࢆ⏝࠸࡚୰ᛶᏊࢫࣆࣥࢆ2ࡘ࡟ศ㞳ࡍࡿ᧯సࢆ⾜ࡗ࡚ࡁࡓࠋ୰ᛶᏊࡣ☢ሙ࡛᭤ࡀࡿࡇ࡜ࡀ
▱ࡽࢀ࡚࠾ࡾࠊᮏ◊✲࡛ࡣࣁ࢖ࣃ࣮࣮࣡ࣞࢨ࣮ࢆ⏝࠸ࡓࣉࣛࢬ࣐⏕ᡂ☢ሙࢆ⏝࠸࡚ࠊ୰ᛶᏊࣅ࣮࣒ࢆ┤᥋☢ሙ࡛ࢫࣆࣥศ㞳ࡋࡼ࠺࡜࠸࠺◊✲࡛࠶ࡿࠋ☢ሙ࡟ᑐࡍࡿ୰ᛶᏊࡢ᭤ࡀࡾゅᗘࡣᑠࡉ࠸ࡃࠊ᭱ࡶ᭤ࡀࡾࡸࡍ࠸⇕୰ᛶᏊࢆ㑅ᢥࡍࡿᢏ⾡ࡀᚲせ࡛࠶ࡿࠋLFEX࡛X⥺ࢆⓎ⏕ࡉࡏ࡚ࠊࡑࡢX⥺ࢆ㔜Ỉ⣲࡟ᙜ࡚࡚J+d=n+p཯ᛂ࡟ࡼࡗ࡚୰ᛶᏊࢆⓎ⏕ࠊࡑࡢ୰ᛶᏊࡢ୰࠿ࡽ⇕୰ᛶᏊࡔࡅࢆ㑅ᢥࡋ࡚฼⏝ࡋࡓࠋ⇕୰ᛶᏊࢆ㑅ᢥⓗ࡟ほ ࡍࡿࡓࡵ࡟Li-6ⷧ⭷ࢆࡘࡅࡓCR39ࢆ⏝࠸ࡓࠋࡇࡢ᫬ࠊLFEXࡀ㖡ᖹᯈ࠿ࡽTNSAຍ㏿࡟ࡼࡗ࡚⏕ᡂࡉࢀࡓࣉࣟࢺࣥࡀCR39ᡭ๓ࡢ㔠ᒓࣉ࣮ࣞࢺ࡟ᙜࡓࡗ࡚ࠊ
ࡑࡇ࠿ࡽࣀ࢖ࢬ࡜࡞ࡿ୰ᛶᏊࢆⓎ⏕ࡉࡏ࡚ࡋࡲ࠺࡜࠸࠺ၥ
㢟ࡀ࠶ࡗࡓࠋࢱ࣮ࢤࢵࢺࡢゅᗘࢆᕤኵࡋ࡚TNSAࣉࣟࢺࣥࢆど㔝እ࡟እࡋࠊࡲࡓCR39ᡭ๓ࡢࣇ࢕ࣝࢱ࣮ᮦ㉁ࢆ࢔ࣝ
࣑࣭㖄ࡢ㡰␒࡟ࡍࡿࡇ࡜࡛ࣀ࢖ࢬ୰ᛶᏊಙྕࢆチᐜࣞ࣋ࣝࡲ࡛ୗࡆࡿࡇ࡜࡟ᡂຌࡋࡓࠋ

ᕥᐇ㦂ࢭࢵࢺ࢔ࢵࣉ෗┿ࠊ୰ኸᐇ㦂ࢭࢵࢺ࢔ࢵࣉ㓄⨨ᅗࠊྑ
CR39ಖㆤ⏝ࡢ࢔࣑ࣝࣇ࢕ࣝࢱ࣮࡟้༳ࡉࢀࡓTNSAࣉࣟࢺࣥ࡟ࡼ
ࡿⓑⰍࣃࢱࣥࠋᙜึࡇࢀࡀࣇ࢕ࣝࢱ࣮๓㠃࡟஌ࡗ࡚࠾ࡾࠊCR39
ࡣࣀ࢖ࢬ୰ᛶᏊࡤ࠿ࡾ࡛⇕୰ᛶᏊࡢ☢ሙ࡟ࡼࡿ೫ᴟࡀほ ࡛ࡁ࡞࠿ࡗࡓࠋࡇࡢᐇ㦂㓄⨨ࡢᕤኵ࡟ࡼࡾࣀ࢖ࢬࢆチᐜࣞ࣋ࣝࡲ࡛ᢚ࠼
ࡿࡇ࡜࡟ᡂຌࡋࡓࠋ

35

ࢡࣛ࢖࢜෭༷⣧⢋Ỉ⣲࣭㔜Ỉ⣲ࢱ࣮ࢤࢵࢺ࡟ࡼࡿ㧗ຠ⋡࢖࢜ࣥຍ㏿ࡢᐇド◊✲௦⾲⪅: ᒾᮏ ᫭ྐཷධᩍဨ㸸వㄒ ぬᩥ*᰾⼥ྜ⛉Ꮫ◊✲ᡤࠊ *኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ

SUMMARY௒ᖺᗘࡣᅛయỈ⣲ⷧ⭷⏕ᡂ⿦⨨ࡢⷧ⭷ᙧᡂ㒊ࡢᵓ㐀ࢆኚ᭦ࡋࡓࠋ
ᅛయỈ⣲ⷧ⭷ࡢཌࡉࢆไᚚࡍࡿࡓࡵ࡟ࠊⷧ⭷ᙧᡂ㒊ࡢ࢜ࣜࣇ࢕ࢫᵓ㐀ࢆࢧࣥࢻ࢖ࢵࢳᵓ㐀࡟ᨵ㐀ࡋࡓࠋ୰ኸࡢCuࣇ࢛࢖ࣝࡢཌࡉࢆኚ᭦ࡍࡿࡇ࡜࡛ࠊ
ᩘ10 ੇ࠿ࡽᩘ100 ੇཌࡉࡢⷧ⭷⏕ᡂ࡟ᡂຌࡋࡓࠋ
ࡲࡓࠊẼᐦᮦᩱࢆ࢖ࣥࢪ࣒࢘ࢩ࣮ࢺ࠿ࡽ࢖ࣥࢪ࢘
࣒Oࣜࣥࢢ࡬࡜ኚ᭦ࡋࠊ࣮ࣞࢨ࣮ࢩࣙࢵࢺᚋ࡟ࡶ
ẼᐦᛶẼᐦᛶࢆ⥔ᣢࡍࡿࡇ࡜ࡀྍ⬟࡜࡞ࡗࡓࠋࡑࡢ ⤖ ᯝ ࠊ LFEX ࣞ ࣮ ࢨ ࣮ ࡢ ࢩ ࣙ ࢵ ࢺ ࣞ ࣮ ࢺ 㸦 3
shots/day㸧࡟ྜࢃࡏ࡚ࠊ⧞㏉ࡋᡂ⭷ࡍࡿࡇ࡜ࡀྍ
⬟࡜࡞ࡗࡓࠋᅛ໬ ᗘࡀ㍍Ỉ⣲࡟ẚ࡭࡚㧗ࡃᡂ⭷ࡋࡸࡍ࠸㔜Ỉ⣲ࢆ౑⏝ࡋࠊ࢖࢜ࣥຍ㏿ᐇ㦂ࢆ⾜ࡗࡓࠋⷧ⭷ࡢཌࡉࢆࣃ࣓࣮ࣛࢱࢧ࣮ࢳࡋ࡚᭱㐺໬ࢆ⾜ࡗࡓࠋFIG. 1ⷧ⭷⏕ᡂ㒊ࡢ᪂ᵓ㐀ࠋ୰ኸࡢCuࣇ࢛࢖ࣝࡢཌࡉࢆ
ㄪᩚࡍࡿࡇ࡜࡛ࠋⷧ⭷ࡢཌࡉࢆไᚚࡍࡿࠋ

[1]T. Wei et al. 21pB2-7᪥ᮏ≀⌮Ꮫ఍ 2024᫓Ꮨ኱఍
[2] T. Wei et al. ㄽᩥᢞ✏୰
36

Development of regenerative liquid target for high-repetition rate laser-driven quantum beam sources
T. Higashiguchi1, T. Soramoto1, T. Morita1, Y. Abe2.3, and S. Fujioka3
1) School of Engineering, Utsunomiya University, 2) Graduate School of Engineering, Osaka University,
3) Institute of Laser Engineering, Osaka University
SUMMARY
We demonstrated a regenerative liquid target for thelaser-driven quantum beam sources efficient waterwindow soft x-ray source. A regenerative liquid target
with a diameter of 30 Pm was continuously injected
into a vacuum. The number of photons was observed tobe ~ 1 x 1013 photons/nm/sr/pulse at a peak wavelengthof 3.9 and 4.2 nm, which arises from n = 4 - n = 4transitions, and 0.4 x 1013 photons/nm/sr/pulse at a peakwavelength of 2.4 nm, which was attributed to n = 4 - n= 5 transitions. The total number of photons emitted in
the 2.3 - 4.4 nm range was ~ 1 x 1013 photons/sr/pulse.
Energetic ions were also emitted with a maximum
energy of 140 keV from the hot, dense plasma.
[1] T. Soramoto et al., (to be submitted).

FIG. (a) Photograph of a laser-produced plasma. (b) Laser
intensity dependence of the number of photons. (c) Energetic
ion spectra.
37

Study of Online Reading of a Gamma-ray Spectroscopy System with Photostimulable Phosphors
S. Miyamoto, H.Matsubara, N.Tanaka, K.F. Law, J. Hernandez, R.Takizawa, T.Tsuido, X.Han, Y.Karaki, R.Yamada
and S.Fujioka
Institute of Laser Engineering, Osaka University
SUMMARY

䝺䞊䝄䞊䝥
䝷䝈䝬䛛䜙
䛾㧗䜶䝛䝹
䜼䞊㼄⥺

㧗࢚ࢿࣝࢠ࣮X⥺ࠊ࣐࢞ࣥ⥺ࡢィ ࡢࡓࡵࠊ✚ศᆺ᳨ฟჾ࡛࠶ࡿ㍤ᑾᛶ⺯ගయ㸦Photostimulable
Phosphors, Imaging Plate࡜ࡋ࡚㈍኎ࡉࢀ࡚࠸ࡿ㸧ࢆࢭࣥࢧ࣮࡜ࡋ࡚྾཰⭷ἲ࡟⏝࠸ࡓࠊHEXSࢩࢫࢸ࣒ࡀ౑ࢃࢀ࡚࠸ࡿࠋ㍤ᑾᛶ⺯ගయࢭࣥࢧ࣮ࡢ฼Ⅼࡣ㸳᱆࡟Ώࡿᗈ࠸ࢲ࢖ࢼ࣑ࢵࢡࣞࣥࢪࢆᣢࡕࠊࡲ
ࡓࣃ࣮࣮࣡ࣞࢨ࣮ࢩࣙࢵࢺ᫬ࡢ㟁☢ࣀ࢖ࢬ࡟ࡼࡿᙳ㡪ࡀ↓ど࡛ࡁࡿࡇ࡜࡛࠶ࡿࠋ୍᪉ࠊ✚ศᆺ࡛࠶ࡿࡓࡵࠊィ ᚋࡢྲྀࡾฟࡋࠊࢹ࣮ࢱࡢㄞࡳฟࡋࠊ
ᾘཤ࡟᫬㛫ࡀ࠿࠿ࡾ㸦ࠥ㸯᫬㛫㸧᪩࠸⧞ࡾ㏉ࡋࡢ฼⏝ࡀᅔ㞴࡞ḞⅬࡀ࠶ࡿࠋ
ࡇࡢ㍤ᑾᛶ⺯ගయ࡟ගࣇ࢓࢖ࣂ࣮ࢆ⏝࠸ࡓ࢜ࣥࣛ࢖ࣥಙྕࡢㄞࡳฟࡋࠊᾘཤࢩࢫࢸ࣒ࢆ᥋⥆ࡋᩘ
Hz⛬ᗘࡢ㧗࠸⧞ࡾ㏉ࡋ฼⏝ࢆྍ⬟࡜ࡍࡿ㸯ࢳࣕࣥࢿ࣭ࣝࢩࢫࢸ࣒ࡢヨస࡜࣮ࣞࢨ࣮ᐇ㦂࡬ࡢ㐺⏝ࢆᐇドࡋࡓࠋ䝎䜲䜸䞊䝗䝺䞊䝄䞊㻻㻮㻵㻿㻲㻼㻢㻟㻣㻸㼄㻙㻝㻜㻜㻼㻯䜸䝅䝻㻔Analog Discovery 2㻕㻘䝕䞊䝍䝻䜺䞊䛺䛹

ヨసࡋࡓࠊගࣇ࢓࢖ࣂ࣮ㄞࡳฟࡋ㍤ᑾᛶ⺯ගయࢭࣥࢧࢩ
ࢫࢸ࣒ࠋ㉥Ⰽ༙ᑟయ࣮ࣞࢨ࣮ගࢆࣇ࢓࢖ࣂ࣮⤒⏤࡛㍤ᑾᛶ⺯ගయ࡟↷ᑕࡋࠊⓎ⏕ࡍࡿ㟷Ⰽ㍤ᑾᛶ⺯ගࢆග㟁Ꮚቑಸ⟶࡛ィ ࡍࡿࠋࢹ࣮ࢱࡣPC࢜ࢩ࡛ࣟグ㘓ࠋ38୰ᛶᏊ࡟ࡼࡿ᪂ࡋ࠸ᅵተỈศィࢩࢫࢸ࣒ࡢ㛤Ⓨ

ᚨᮏᐙᗣ1 㸪వㄒぬᩥ2㸪᭷ᕝᏳಙ21) బ㈡኱Ꮫ㸪2) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ

(a)

SUMMARY୰ᛶᏊ࡟ࡼࡿ᪂ࡋ࠸ᅵተỈศィ ࢩࢫࢸ࣒ࡢ㛤Ⓨࡢࡓࡵࠊ᪥ᮏ࡟࠾ࡅࡿᏱᐂ⥺ᅵተỈศほ ࢩࢫࢸ࣒㸦COSMOS㸧ࡢィ ್ࢆẚ㍑ࡋࡓࠋᑐ㇟࡜ࡋ
ࡓᅡሙヨ㦂ᆅࡣࠊᅵᛶࡢ␗࡞ࡿ㸱ᆅⅬ㸸㔜⢓ᅵࡀศᕸࡍࡿㅋ᪩ᖸᣅᆅࠊ㯮࣎ࢡᅵࡀሁ✚ࡍࡿ༡㜿⸽ኪᓟᒣ࠾ࡼࡧ㫽ྲྀ◁ୣศᕸࡍࡿᾏᓊ⥺࡛࠶ࡿࠋ
FIG. aࡣࠊほ ᆅࡢᶍᘧᅗࡢ౛࡛࠶ࡾࠊFIG. bࡣ㫽ྲྀ◁ୣࡢほ ᆅࡢ෗┿࡛࠶ࡿࠋ COSMOSࡢ⇕እ୰ᛶᏊᩘ࢝࢘ࣥࢺ㸦24᫬㛫⛣ືᖹᆒ್㸧ࡣࠊᖸᣅᆅ
ࡀ400⛬ᗘ*ࠊⅆᒣ⅊ᅵ࡜㫽ྲྀ◁ୣ㸦FIG. c㸧**ࡀ
800⛬ᗘ࡛᥎⛣ࡋࡓࠋࡇࢀࡣࠊᅵተỈศ࡟ᛂࡌࡓኚ
ືᛶ࡟ࡼࡿᕪ␗ࢆ♧ࡋࡓࠋࡇࡢᡂᯝࡣࠊ௒ᚋࡢ᳨
ฟჾࢹࣂ࢖ࢫࡢ㛤Ⓨ࡟࠾࠸࡚㔜せ࡞▱ぢ࡛࠶ࡿࠋ௒ᚋࡣࠊ᳨ฟჾࢹࣂ࢖ࢫ࡜ࡢẚ㍑᳨ウࡀ⪃࠼ࡽ
ࢀࡿࠋ

(b)

(c)

*ᖹᔱ㞝ኴ, ᶲᇶ, ᚨᮏᐙᗣ, ᐑᮏⱥ᥹ (2023): Ᏹᐂ⥺୰ᛶᏊࢆ฼⏝ࡋࡓ㔜⢓ᅵࡢ⾲ᒙᅵተỈศほ , ㎰ᴗ㎰ᮧᕤᏛ఍ㄽᩥ㞟 317(912):137-147**ᖹᔱ㞝ኴ (2024):௧࿴5ᖺᗘ㫽ྲྀ኱Ꮫ஝⇱ᆅ◊✲ࢭࣥࢱ࣮ඹྠ◊✲ሗ࿌᭩

FIG.ᅡሙ࡟࠾ࡅࡿィ ౛: (a) COSMOSࡢィ ᴫ␎ᅗ㸪(b)◊✲ᅡሙ㸪㸦c㸧COSMOSࡢィ ್ࡢ౛39㉸㧗ᙉᗘ࣮ࣞࢨ࣮࢖࢜ࣥຍ㏿࡟࠾ࡅࡿ࢖࢜ࣥ໬ࡢ≀⌮࡜ࡑࡢไᚚ⏿ᫀ⫱11) 㔞Ꮚ⛉Ꮫᢏ⾡◊✲㛤Ⓨᶵᵓග㔞Ꮚ⛉Ꮫ◊✲ᡤ

SUMMARY࢚ࢿࣝࢠ࣮2 J㸪ࣃࣝࢫᖜ33.4 fs㸦࢞࢘ࢩ࢔ࣥ㸧㸪ࢫ࣏ࢵࢺᚄ3 ȝP㸦࢞࢘ࢩ࢔ࣥ㸧㸪つ᱁໬࣋ࢡࢺࣝ
࣏ࢸࣥࢩࣕࣝa0=10㸦Ἴ㛗1 ȝP࡛1.371020 :FP2
࡟┦ᙜ㸧ࡢ㉸㧗ᙉᗘ࣮ࣞࢨ࣮↷ᑕ࡟ࡼࡿ࢖࢜ࣥຍ
㏿ࡢ୕ḟඖࢩ࣑࣮ࣗࣞࢩࣙࣥࢆᐇ᪋ࡋࡓ㸬ィ⟬㔞๐ῶࡢࡓࡵ㸪ᶆⓗࡢ᭱኱㟁Ꮚᐦᗘࢆ⮫⏺ᐦᗘࡢ60ಸࡲ࡛࡜ࡋ࡚᫬✵㛫᱁Ꮚࢧ࢖ࢬࢆ኱ࡁࡃ࡜ࡿࡇ࡜
࡛㸪ẚ㍑ⓗ✵㛫ࢫࢣ࣮ࣝࡢ኱ࡁ࡞୕ḟඖィ⟬ࢆᐇ⾜ࡋࡓ㸬ࡲࡓ㸪ᅛయᐦᗘࡼࡾࡶపᐦᗘࡢᶆⓗࢆᢅࡗ࡚࠸ࡿࡇ࡜࠿ࡽ㸪㟁㞳㐣⛬࡜ࡋ࡚ࡣ⾪✺㟁㞳ࡣ⪃៖ࡏࡎ㸪㟁ሙ㟁㞳ࡢࡳࢆᢅ࠺ࡇ࡜࡜ࡋࡓ㸬ࡑࡢ⤖ᯝ㸪㟁ሙ㟁㞳ࡢࡳࢆ⪃៖ࡋࡓሙྜ࡛ࡶ㸪ᩘ
MeV௨ୖࡢ㧗࢚ࢿࣝࢠ࣮ࡲ࡛ຍ㏿ࡉࢀࡿⅣ⣲࢖࢜ࣥࡣභ౯ࡀᨭ㓄ⓗ࡛࠶ࡿࡇ࡜ࡀࢃ࠿ࡗࡓ㸬ḟᖺᗘࡣࡼࡾ㧗ᐦᗘࡢᶆⓗࢆᢅ࠸㸪⾪✺ຠᯝ࡟ࡘ࠸࡚ㄪ
FIG. 㟁Ꮚ࠾ࡼࡧⅣ⣲࢖࢜ࣥࡢ࢚ࢿࣝࢠ࣮ࢫ࣌ࢡࢺࣝ㸬࡭࡚࠸ࡃணᐃ࡛࠶ࡿ㸬㉥㸪⥳㸪㟷㸪⣸ࡣ㸱ࠥ㸴౯Ⅳ⣲࢖࢜ࣥࢆ㸪ỈⰍࡣ㟁Ꮚࡢࢫ࣌ࢡࢺࣝࢆ♧ࡍ㸬㧗࢚ࢿࣝࢠ࣮࢖࢜ࣥࡢ࡯࡜ࢇ࡝ࡀභ
౯ࡲ࡛㟁㞳ࡋ࡚࠸ࡿࡇ࡜ࡀࢃ࠿ࡿ㸬40㉸㧗ᙉᗘ࣮ࣞࢨ࣮࡟ࡼࡿ㧗㟁㞳㔜㔠ᒓࣉࣛࢬ࣐ࡢᙧᡂ㐣⛬ࡢゎ᫂
M. Nishiuchi1, L. Chang1, N. Dover2, K. Kondo1, K. Kon1, H. Sasaki1, J. Koga1, M. Hata1, N. Iwata3,
Y. Takagi3, K. Sugimoto4, and Y. Sentoku3
1) Kansai Photon Science Institute, QST, 2) Imperial College London, 3) Institute of Laser Engineering, Osaka Univ.,
4) Yukawa Institute for Theoretical Physics, Kyoto Univ.
SUMMARY࣌ࢱ࣡ࢵࢺ⣭ࡢ㧗ᙉᗘ࣮ࣞࢨ࣮ࢆ⏝࠸ࢀࡤࠊࣇ࢙࣒ࢺ⛊࠿ࡽࣆࢥ⛊࡜࠸࠺▷᫬㛫࡟㕲ࡸ㖟࡞࡝ࡢ㔜㔠ᒓࢆ㉸㧗 ࡟ຍ⇕࡛ࡁࠊෆ㒊࡟࠾࠸࡚ࡣ㔜㔠ᒓࡢከ౯㟁㞳ࡀ㐍⾜ࡍࡿ࡜⪃࠼ࡽࢀ࡚࠸ࡿࡀࠊ
༑ศ࡞⌮ゎࡣᚓࡽࢀ࡚࠸࡞࠸ࠋ
ᮏ◊✲࡛ࡣࠊ㔞Ꮚ⛉Ꮫᢏ⾡◊✲㛤Ⓨᶵᵓ㛵すග⛉Ꮫ◊✲ᡤࡢJ-KAREN-P࣮ࣞࢨ࣮ࢆ㔠ࡢⷧ⭷ ࡟↷ᑕࡋࠊ⏕ᡂࡉࢀࡿ㧗㟁㞳㧗࢚ࢿࣝࢠ࣮ᐦᗘࣉࣛࢬ࣐ࡢ ᗘࢆ X⥺CCDࢆࣇ࢛ࢺࣥ࢝࢘ࣥࢸ࢕ࣥࢢ
࣮ࣔࢻ࡟ࡼࡾィ ࡋࢫ࣌ࢡࢺࣝࢆྲྀᚓࡋࡓࠋィࡉࢀࡓ X ⥺ࡢࢫ࣌ࢡࢺࣝ㸦5—12 keVࡢ㡿ᇦ㸧࡟ࡣࠊ㐃⥆ᡂศ࡟ຍ࠼3d-2p㑄⛣ࡢࣛ࢖ࣥ࡟ࡼࡿࣆ࣮ࢡࡀィ ࡉࢀࠊࢱ࣮ࢤࢵࢺࡢཌࡳࢆኚ࠼ࡿ࡜ࣆ࣮
ࢡ఩⨨ࡀࢩࣇࢺࡍࡿ᫂☜࡞ࢹ࣮ࢱࢆྲྀᚓࡋࡓࠋࢫ
࣌ࢡࢺࣝࣆ࣮ࢡࡢࢩࣇࢺࡣ㔠ࡢࢱ࣮ࢤࢵࢺࡢ㟁㞳ᗘ࡟ࡼࡿ࡜⪃࠼ࡽࢀࡿࡓࡵࠊ௒ᚋ࢔ࢺ࣑ࢵࢡࢥ࣮
ࢻࠊPICࢥ࣮ࢻࢆ㥑౑ࡋࠊ㧗ᙉᗘ࣮ࣞࢨ࣮࡜ᅛయ
㔜㔠ᒓⷧ⭷࡟ࡼࡿຍ⇕ࡢࢲ࢖ࢼ࣑ࢡࢫཬࡧ࢖࢜ࣥ
໬ࣉࣟࢭࢫࡢໟᣓⓗ࡞⌮ゎࢆ㐍ࡵࡿࠋᐇ㦂ࢭࢵࢺ࢔ࢵࣉࠋX⥺ࡢCCDࢆࣇ࢛ࢺࣥ࢝࢘ࣥࢸ࢕ࣥ
ࢢ࣮ࣔࢻ࡛౑⏝ࡋࠊࢫ࣌ࢡࢺࣝࢆྲྀᚓࠋ㔠ࡢⷧ⭷࡟ࡼࡗ࡚ྲྀᚓࡉࢀࡓX⥺ࢫ࣌ࢡࢺࣝ࡟ࡣࠊ㐃⥆ᡂศ࡜3d-2p㑄⛣࡟㉳ᅉࡍࡿࣆ࣮ࢡࡀぢ࠼࡚࠸ࡿࠋ

41

Study on laser-driven repetitive ion acceleration using liquid jet targets
Y. Abe1,2, R. Matsuura1, K. Iwasa1, T. Higashiguchi3, T. Morita3, Y. Oda4, M. Kume3, T. Niinuma3, S. Hirao3,
R. Kurihara3, Y. Koyanagi3, K. Sunaga3, A. Ogiwara3, H. Kobayashi3, T. Sugiura3, T. Soramoto3,
N. Tohara3, S. Fujioka2, and Y. Kuramitsu1,21) Graduate School of Engineering, Osaka University, 2) Institute of Laser Engineering, Osaka University, 3) School ofEngineering, Utsunomiya University, 4) Faculty of Science and Engineering, Setsunan University
SUMMARY(a)

Liquid jet targets are a promising approach to highrepetition quantum beam generation (x-rays, electrons,
neutrons, ions) with high-power lasers. The advantage
of liquid jet targets is the ability to supply a variety oftarget elements in liquid without synchronizing laser
shot timing. We have developed a high-speed liquid jet
target system that sprays cylindrical water jets withdiameters of 30  500 Pm. This year, we have madeprogress in pump system, stabilization of the entire
system that affects jet vibrations, and development ofadvanced nozzles producing “C-shaped” jets. The Cshaped jet will be applied for experiments on the“inverted corona fusion” [1], which have been
investigated for the development of point neutron
sources for radiography driven by cylindricallysymmetric ion acceleration [1].

(c)

(b)

Laser

FIG. (a) Schematics of the water jet target system, (b) Cshaped nozzle for “inverted corona fusion” scheme, and (c)expected plasma dynamics inside a C-shaped target.

[1] Y. Abe et al., Appl. Phys. Lett. 111, 233506 (2017)42㧗ຠ⋡࣮ࣞࢨ࣮࢖࢜ࣥຍ㏿ࡢࡓࡵࡢࢡࣛ࢖࢜෭༷⣧⢋ᅛయỈ⣲ⷧ⭷⿦⨨ࡢ㛤Ⓨ◊✲௦⾲⪅: ᒾᮏ ᫭ྐཷධᩍဨ㸸వㄒ ぬᩥ*᰾⼥ྜ⛉Ꮫ◊✲ᡤࠊ *኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ

SUMMARY᪂ࡋ࠸࢖࢜ࣥຍ㏿ᶵᵓࢆᐇドࡍࡿࡓࡵ࡟⣧⢋ᅛయ㔜Ỉ⣲ⷧ⭷ࢆ⏕ᡂࡋ࣮ࣞࢨ࣮ᐇ㦂࡬౪⤥ࡍࡿ⿦⨨ࡢ㛤Ⓨࢆ⾜࠺ࠋᅛయ㔜Ỉ⣲ⷧ⭷ࢆᐇ⌧ࡍࡿࡇ࡜࡛ࠊ㧗ຠ⋡ࡢ㔜㝧Ꮚຍ㏿ࡢᐇ⌧ࢆ┠ᣦࡍࠋ᫖ᖺᗘ࡛ࡣ࢖ࣥࢪ࣒࢘Oࣜࣥࢢ࡟ࡼࡿࢩ࣮ࣝᵓ
㐀ࢆᐇ⌧ࡋࡓ᪂ᵓ㐀ࡢⷧ⭷ᙧᡂᑠᐊࢆࡶࡘ⿦⨨࡬ࡢ᭦᪂ࡀ⤊ࢃࡾࠊ㖡ᇶᯈࡢ࢜ࣜࣇ࢕ࢫ࡟ཌࡉࢆ50500ȝPࡢ㛫࡛ไᚚࡋࡓᅛయ㔜Ỉ⣲ⷧ⭷ࡢᙧᡂࡀྍ
⬟࡟࡞ࡗࡓࠋ
௒ᖺᗘࡣ୍ᯛࡢ㖡ᇶ┙࡟」ᩘಶࡢ࢜ࣜࣇ࢕ࢫࢆ
‽ഛࡋࠊࡑࡢ࢜ࣜࣇ࢕ࢫ࡟ᅛయ㔜Ỉ⣲ⷧ⭷ࢆ☜ᐇ࡟⏕ᡂࡍࡿ᮲௳ࡢỴᐃࡸ୍᪥」ᩘᅇࢩࣙࢵࢺࢆྍ
⬟࡟ࡍࡿࢩ࣮ࣝ㒊ࡢㄪᩚ࡞࡝ࢆᐇ᪋ࡋࡓࠋㄪᩚᚋ
ࡢ⿦⨨ࢆ౑⏝ࡋ࡚LFEX࣮ࣞࢨ࣮࡟ࡼࡿ㔜㝧Ꮚຍ㏿ᐇ㦂ࢆᐇ᪋ࡋࡓࠋ

FIG. 1 ⿦⨨ࢆࢱ࣮ࢤࢵࢺࢳࣕࣥࣂ࣮࡬ྲྀࡾ௜ࡅᅛయỈ⣲ᙧᡂᚋࠊⷧ⭷㒊ࢆࢱ࣮ࢤࢵࢺࢭࣥࢱ࣮࡬⛣ືࡋࢩࣙࢵࢺ
┤๓ࡢᵝᏊࠋ

43

Development of gamma-ray polarimeter for high field science
Tae. Moon Jeoung1, Yasunobu. Arikawa2, Akifumi Yogo2, Yoshiaki Kato2,
1) ELI-Beamline, 2) Institute of Laser Engineering, Osaka University, JapanSUMMARY
In ultra-high intense laser science, a direct generationof polarized J-ray from highly relativistic electro
magnetic fields is one of the most frag ship topic. For
this study, a J-ray polarimeter is indispensable though
not yet developed. In this collaboration research wehave been developing a g-ray polarimeter by usingg+dÆn+p reaction where direction of neutron andproton generation is FRVș of polarization of J-ray. In
previous study Dr. Arikawa demonstrated J-ray
polarimetry by putting D2O attached neutron-bubble
detector at polarized J-ray facility. In FY 2023 our teamstudied conceptual designing for the ELI-Beamline
experiment. The result from the designing calculation
showed, more than 106 J-ray/s with polarized withenergies from 3 to 100 MeV can be measured which is
sufficient sensitivity and detection range for ELIBeamline.

FIG. Experimental demonstration on the J-ray polarimetory byusing neutron-generation-angular distribution via J+dÆn+p.
The FRVș function fitted with the neutron signal plot indicatesthe evidence of J-ray is polarized. The data was taken by Dr
Arikawa at NEW SUBARU J-ray facility.
44㝧Ꮚࣅ࣮࣒㥑ື⾪ᧁⅬⅆࡢ⌮ㄽࢩ࣑࣮ࣗࣞࢩࣙࣥ◊✲Javier Honrubia1㸪ᮧୖ໷ୟ21) ࣐ࢻࣜࢵࢻᕤ⛉኱Ꮫ㸪2) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ

SUMMARYण೘େනं͗఑঑ͤΖু఼ܺՒ͹ΨϨζψϩʀεψϨΨͶ‫ͤؖ‬Ζཀྵ࿨અ‫ܯ‬Ͷଲ͢ͱ‫ڠ‬ಋ‫ڂݜ‬Νߨͮͪɽ֫༧߻఼ՒͺϪʖδʖͫ͜Ͳۨಊ͠ΗΖ
અ‫͍ͪͪͮͲܯ‬Ό఼ՒͶචགྷ͵̓એຬౕͳ͏͑߶
ԻΝࣰ‫ͤݳ‬Ζචགྷ͍͗Ζɽࠕյ͹ࠅࡏ‫ڠ‬ಋ‫Ͳڂݜ‬ͺɼ΢ϱϏένʖͳक೫ྋ͹ুಧଐౕΝ1000 km
ҐԾͳͤΖͳ‫ࣥࢺࣟࣉࡢ࡚ࡋ࡜࣮ࢱࢫ࣮ࣈ࡟ڠ‬ࣅ࣮࣒㏣ຍ⇕ࢆຍ࿡ࡋࠊⅬⅆ㐩ᡂྍ⬟࡞ࢱ࣮ࢤࢵ
ࢺ࡜ࣅ࣮࣒ࡢ᮲௳ࢆ᫂ࡽ࠿࡟ࡋࡓࠋ ྑᅗ࡟♧ࡍࡼ࠺࡟ࢥ࣮ࣥࡢᕥഃ࡟タ⨨ࡋࡓࢩ࢙ࣝࢆ㉸㧗ᙉᗘ࣮ࣞࢨ࣮࡛ຍ⇕ࡍࡿࡇ࡜࡟ࡼࡗ࡚ᩘ0H9ࡢ࢚ࢿࣝࢠ࣮ࢆᣢࡘࣉࣟࢺࣥࣅ࣮࣒ࡀ㧗ຠ⋡࡛⏕ᡂࡉࢀࡿࡇ࡜ࡀ᫂ࡽ࠿࡟࡞ࡗࡓࠋ

FIG. ࢥ࣮ࣥࡢᕥഃ࡟タ⨨ࡋࡓࢩ࢙ࣝࢆ㉸㧗ᙉᗘ࣮ࣞࢨ࣮࡛ຍ⇕ࡍࡿࡇ࡜࡟ࡼࡗ࡚ᩘ0H9ࡢ࢚ࢿࣝࢠ࣮ࢆᣢࡘ
ࣉࣟࢺࣥࣅ࣮࣒ࡀ㧗ຠ⋡࡛⏕ᡂࡉࢀࡿࡇ࡜ࡀ᫂ࡽ࠿࡟
࡞ࡗࡓࠋ
45ψόߑଆରΝ࢘ͮͪ௔߶Φϋϩάʖ৖ਫ਼੔͹෼ཀྵ‫ڂݜ‬
Guskov Sergey Yurevich㸪ᮧୖ໷ୟ21) ࣟࢩ࢔⛉Ꮫ࢔࢝ࢹ࣑࣮࣭ࣞ࣋ࢹࣇ≀⌮◊✲ᡤ㸪2) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ

SUMMARYࠕࢼࣀࢳ࣮ࣗࣈຍ㏿ჾࠖࡢཎ⌮࡟ᇶ࡙ࡁࠊࢼࣀ
ࢳ࣮ࣗࣈ㍈᪉ྥࡢ㟼㟁ⓗຍ㏿ࢆㄏ㉳ࡍࡿࡇ࡜࡟ࡼࡾࠊ
ࣉࣟࢺࣥࣅ࣮࣒ࡀ㍈᪉ྥ࡟⏕ᡂ࣭ຍ㏿ࡉࢀࡿࠋࡇࡢ
ຍ㏿ࣉࣟࢺࣥࡢ᭱኱್ࡣࠊࢼࣀࢳ࣮ࣗࣈࡢ┤ᚄ࡟ᙉࡃ౫Ꮡࡋࠊ㍈᪉ྥࡢ㛗ࡉ࡟ࡣṤ࡝౫Ꮡࡋ࡞࠸ࡇ࡜ࡀࢃ
࠿ࡗ࡚࠸ࡿࠋᮏ◊✲࡛ࡣࠊࢼࣀࢳ࣮ࣗࣈࢆྵࡴࢼࣀ
ᵓ㐀యࡢヲ⣽࡞㸱ḟඖ⢏Ꮚࢩ࣑࣮ࣗࣞࢩࣙࣥࢆ⾜࡞࠸࢖࢜ࣥຍ㏿ࡢ᭱㐺໬ࢆ⾜ࡗࡓࠋྑᅗ࡟♧ࡍࡼ࠺࡟ࢼࣀࢳ࣮ࣗࣈෆ࡟඘ሸࡉࢀࡓỈ⣲ࢱ࣮ࢤࢵࢺ
ࡀࠊࣉࣟࢺࣥࣅ࣮࣒࡜ࡋ࡚㧗࠸༢Ⰽᛶࢆᣢࡗ࡚ຍ
㏿࣭ᑕฟࡉࢀࡿࡇ࡜ࡀࢩ࣑࣮ࣗࣞࢩࣙࣥ࠿ࡽ᫂ࡽ
࠿࡜࡞ࡗࡓࠋ

FIG. ࢼࣀࢳ࣮ࣗࣈෆ࡟඘ሸࡉࢀࡓỈ⣲ࢱ࣮ࢤࢵࢺࡀࠊ
ࣉࣟࢺࣥࣅ࣮࣒࡜ࡋ࡚㧗࠸༢Ⰽᛶࢆᣢࡗ࡚ຍ㏿࣭ᑕฟࡉࢀࡿࡇ࡜ࡀࢩ࣑࣮ࣗࣞࢩࣙࣥ࠿ࡽ᫂ࡽ࠿࡜࡞ࡗࡓࠋ
46࣐࢖ࢡࣟࣂࣈࣝ⇿⦰࡟ࡼࡿᙉ┦ᑐㄽ㡿ᇦ≀⌮ࡢ᥈⣴࡜㛤ᣅSergey Bulanov1㸪ᮧୖ໷ୟ21) Ḣᕞ㧗ᙉᗘ࣮ࣞࢨ࣮ᐇ㦂᪋タ (ELI)㸪2) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ

SUMMARY࣑ࢡࣟࣥࢫࢣ࣮ࣝࡢ࣐࢖ࢡࣟࣂࣈࣝෆ㒊࡟ᙧᡂࡉࢀࡿ┦ᑐㄽⓗࣉࣛࢬ࣐ࡢᣲືࢆ⢭ᰝࡍࡿ࡜ඹ
࡟ࠊ㉸㧗㟁ሙࡢ⎔ቃୗ࡛ࠕ࣑ࢡࣟࣥࢫࢣ࣮࡛ࣝ
Schwingerᴟ㝈㟁ሙࠖ࡟༉ᩛࡍࡿ㟁ሙ⏕ᡂࢆྍ⬟࡜ࡍࡿ⢏Ꮚຍ㏿ჾᴫᛕタィࡢ☜❧࡜ࡑࡢලయⓗ࡞⌮ㄽタィࢆ⾜ࡗࡓࠋ≉࡟ࠊࣂࣈࣝ୰ࡢ⏕ᡂ㟁ሙࡣ⇿⦰ࢆ㉳ࡇࡋࡓ㟁ሙࡼࡾࡶ஧᱆⛬ᗘᙉࡃࠊ୰ᚰ࡛
ᅽ⦰ࡉࢀࡓ࢖࢜ࣥࡢ⃭ࡋ࠸⇿Ⓨࢆᘬࡁ㉳ࡇࡋࠊ⤖ᯝ࡜ࡋ࡚㸪⇿⦰㐣⛬࡛ᚓࡽࢀࡿ࢚ࢿࣝࢠ࣮ࡼࡾ୍
᱆⛬ᗘ㧗࠸㐠ື࢚ࢿࣝࢠ࣮ࢆᣢࡗ࡚㣕ᩓࡍࡿࡇ࡜
ࡀࢃ࠿ࡗࡓࠋྑᅗ࡟♧ࡍࡼ࠺࡟ࠊึᮇ࡟㸯࣑ࢡ࡛ࣟࣥ࠶ࡗࡓࣂࣈࣝࡢ᭱኱ᅽ⦰᫬ࡢࢧ࢖ࢬࡣࢼࣀ
࣓࣮ࢺࣝ⛬ᗘ࡟ࡲ࡛཰⦰ࡋࠊࡑࡢ᫬ࡢࣉࣟࢺࣥࡢ
ᐦᗘࡣᅛయᐦᗘࡢ⣙㸱㸮୓ಸ࡟ࡲ࡛ᅽ⦰ࡉࢀࡿࡇ
࡜ࡀࢃ࠿ࡗࡓࠋ
FIG. ึᮇ࡟㸯࣑ࢡ࡛ࣟࣥ࠶ࡗࡓࣂࣈࣝࡢ᭱኱ᅽ⦰᫬ࡢ
ࢧ࢖ࢬࡣࢼࣀ࣓࣮ࢺࣝ⛬ᗘ࡟ࡲ࡛཰⦰ࡋࠊࡑࡢ᫬ࡢࣉࣟ
ࢺࣥࡢᐦᗘࡣᅛయᐦᗘࡢ⣙㸱㸮୓ಸ࡟ࡲ࡛ᅽ⦰ࡉࢀࡿࡇ
࡜ࡀࢃ࠿ࡗࡓࠋ
47

࣮ࣞࢨ࣮㥑ື୰ᛶᏊ࡟ࡼࡿᜏᫍෆඖ⣲ྜᡂࡢ◊✲᪩ᕝᓅே1㸪వㄒぬᩥ2 㸪᭷ᕝᏳಙ2 㸪ᕴ ‪ኴ2, Lan Zechen2 㸪 Wei Tianyun21) 㔞Ꮚ⛉Ꮫᢏ⾡◊✲㛤Ⓨᶵᵓ㸪2) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ

SUMMARY

Intermediate states
Excitation

176Luࡣ⣙3.71010 ᖺࡢ༙ῶᮇ࡛ 176Hf࡟ȕᔂቯࡍ

Deexcitation

Neutron1ࡿᏱᐂ᰾᫬ィ࡜ࡋ࡚▱ࡽࢀ࡚࠸ࡿࠋ㝹▼◊✲࡛ࠊ୍㒊ࡢ㝹▼࡛༙ῶᮇࡀ▷ࡃ࡞ࡿ⌧㇟ࡀⓎぢࡉࢀࠊኴ㝧⣔ᙧᡂࡢึᮇ࡟࠾࠸࡚ᮍゎ᫂ࡢᏱᐂⓗ⌧㇟ࡀⓎ⏕ࡋࡓ࡜⪃࠼ࡽࢀࡿࠋᡃࠎࡣ㧗࢚ࢿࣝࢠ࣮Ᏹᐂ
⥺ࡢ2ḟ୰ᛶᏊ࡟ࡼࡿຍ㏿ᔂቯࢆᥦ᱌ࡋ࡚࠸ࡿࠋࡑ
ࡇ࡛ࠊࡇࡢࡼ࠺࡞୰ᛶᏊ࡟ࡼࡿ᰾཯ᛂࡀ࡝ࡢࡼ࠺
࡞᰾✀࡟ᑐࡋ࡚ࠊ࡝ࡢࡼ࠺࡞ᙳ㡪ࢆ୚࠼ࡿࡢ࠿⌮ㄽⓗ࡟᳨ウࡋࡓࠋࡲࡓࠊLFEXࢆ⏝࠸ࡓᐇ㦂ࡢྍ⬟ᛶ࡟ࡘ࠸᳨࡚ウࡋࡓࠋ

Isomer7
176Lu
Q ȕ= 1192.8 keV
Q EC= 106.2 keV

Ground stateȕdecay
0.34%
8+99.66%

401.0 keV
0.329

6+

306.8 keV
944+201.8 keV
2+
0+
176Hf

86

88.3 keV
13.3

FIG. 㧗࢚ࢿࣝࢠ࣮Ᏹᐂ⥺ࡢ᰾◚○཯ᛂ➼࡛⏕ᡂࡉࢀࡓ୰ᛶᏊ࡟ࡼࡿᏱ᰾᰾᫬ィ 176Luࡢຍ㏿ᔂቯࡢ࣓࢝ࢽࢬ࣒
ࡢᴫᛕᅗࠋᇶᗏ≧ែ࠿ࡽ୰ᛶᏊࡢ㠀ᙎᛶᩓ஘࡟ࡼࡗ࡚࢔
࢖ࢯ࣐࣮࡟㑄⛣ࡋ⥆ࡅ࡚ᙺ3.7᫬㛫ࡢ༙ῶᮇ࡛ȕᔂቯࡍࡿࠋ
48

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SUMMARYᮏඹྠ◊✲ࡢ┠ⓗࡣࠊࡇࢀࡲ࡛࡟࡞࠸᪂つ࡞ࢱ࣮ࢤࢵࢺᵓ㐀ࢆᥦ㉳ࡋࠊᚑ᮶ᆺ㸦౛࠼ࡤTNSA㸧ࡼࡾࡶຍ㏿ࣃࣇ࢛࣮࣐ࣥࢫࡢⰋ࠸ຍ㏿ᶵᵓࢆ⌮ㄽ࣭ᐇ㦂◊✲ࢆ㏻ࡌ࡚ᵓ⠏࣭ᥦၐࡍࡿ࡜ඹ࡟ࠊࡑࡢ⫼ᬒ≀⌮ࢆヲ⣽࡟ゎ᫂ࡍࡿࡇ࡜࡟࠶ࡿࠋ௒ᅇࠊ᪂ࡓ࡞
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ᯇ஭㱟அ௓1㸪V. C. Agulto2㸪ຍ⸨ᗣస2㸪୰ᔱㄔ21) ୕㔜኱Ꮫ㸪2) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ

SUMMARY┿✵⵨╔ἲ࡟ࡼࡾ㔠ⷧ⭷ࢆᡂ⭷ࡍࡿሙྜࠊ㐃⥆⭷ࢆᙧᡂ࡛ࡁ࡞࠸࡯࡝ࡢ⵨╔㛤ጞ┤ᚋ࡟࠾࠸࡚ࡣ
㔠ࡣ࢔࢖ࣛࣥࢻࢆᙧᡂࡋ㟁Ẽఏᑟࢆ♧ࡉ࡞࠸ࠋ୍
᪉࡛ࠊ᭷ᶵ༙ᑟయPCBMⷧ⭷ୖ࡟㔠ࢆ⵨╔ࡍࡿ࡜ࠊࣃ࣮ࢥ࣮ࣞࢩࣙࣥ㜈್࡟⮳ࡿ๓ࡢᴟᚤ㔞ࡢ⵨╔᫬࡟࠾࠸࡚ࡶ㟁Ẽఏᑟᗘࡢ㠀⥺ᙧⓗ࡞ቑ኱ࡀぢࡽࢀࡿ㸦ྑᅗ㸧ࠋᮏ◊✲࡛ࡣࠊࡇࡢࡼ࠺࡞᭷ᶵ༙ᑟయ
࡜㔠ᒓࢼࣀ⢏Ꮚࡢ」ྜ⣔࡟࠾࠸࡚ぢࡽࢀࡿ≉␗࡞㟁Ẽఏᑟ≉ᛶࢆά⏝ࡋࡓ᪂つ࡞ࢸࣛ࣊ࣝࢶ㧗㏿ࢫ࢖ࢵࢳࣥࢢ⣲Ꮚࡢ๰ฟࢆ᳨ウࡋ࡚࠸ࡿࠋPCBMࢆᡂ⭷࠶ࡿ࠸ࡣᡂ⭷ࡋ࡚࠸࡞࠸㧗᢬ᢠࢩࣜࢥࣥᇶᯈ
࡟ྠ᮲௳࡛㔠ࢆ⵨╔ࡋࡓヨᩱࡢࢸࣛ࣊ࣝࢶ㏱㐣⋡ࢆẚ㍑ࡋࡓ࡜ࡇࢁࠊPCBMࢆᡂ⭷ࡋ࡚࠸࡞࠸ヨᩱ࡛ࡣࢸࣛ࣊ࣝࢶ㏱㐣࡟ኚ໬ࡀぢࡽࢀ࡞࠸࡯࡝ࡢᴟ
ᚤ㔞ࡢ⵨╔㔞࡛࠶ࡗ࡚ࡶࠊPCBMࢆᡂ⭷ࡋࡓヨᩱ࡛ࡣ㢧ⴭ࡞ࢸࣛ࣊ࣝࢶ㏱㐣ࡢῶᑡࡀぢࡽࢀࡓࠋ」⣲ᑟ㟁⋡ࢫ࣌ࢡࢺࣝ࠿ࡽࡣ஧✀㢮ࡢ␗࡞ࡗࡓ㟁Ẽఏᑟࣔࢹࣝ࡟ᚑ࠺㟁Ꮚ≧ែࡢΰᅾࡀ♧၀ࡉࢀ࡚࠸
ࡿࠋ
66

FIG. PCBMࢆᡂ⭷࠶ࡿ࠸ࡣᡂ⭷ࡋ࡚࠸࡞࠸㧗᢬ᢠࢩࣜࢥ
ࣥᇶᯈ࡬ࡢ㔠⵨╔࠾ࡼࡧヨᩱࡢࢥࣥࢲࢡࢱࣥࢫࡢ⤒᫬ኚ໬ࡢin situࣔࢽࢱࣜࣥࢢࡢᶍᘧᅗ㸦ᕥ㸧࠾ࡼࡧ㟁ὶࡢ⤒᫬ኚ໬ࡢ ᐃ⤖ᯝ㸦ྑ㸧Development of broadband antireflection structure in THz regionṊ⏣᭷┿1㸪୕ᾆᝆᮭ1㸪ᑠ㔝᫴࿃1㸪Verdad C. Agulto2㸪୰ᓥㄔ21) ྡྂᒇᕤᴗ኱Ꮫ㸪2) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ
SUMMARY᫖ᖺᗘࡲ࡛࡟ࠊ㉸▷ࣃࣝࢫ࣮ࣞࢨ࣮ຍᕤࢆ᪋ࡋ
ࡓZnO༢⤖ᬗୖ࡟ࡣḞ㝗ࡀᙧᡂࡉࢀࠊTHzἼࢆ྾཰ࡍࡿࡇ࡜ࢆぢฟࡋ࡚࠸ࡿࠋ௒ᖺᗘࡣࡲࡎ㟁Ꮚ⥺ບ㉳Ⓨගศග࡟ࡼࡗ࡚ࠊࡇࡢḞ㝗✀ูࡢྠᐃࢆ
⾜ࡗࡓࠋᅗࡣຍᕤ⾲㠃ཬࡧ࢔ࢽ࣮ࣝฎ⌮㠃࡟࠾ࡅࡿ ྛ✀Ḟ㝗࡟㛵㐃ࡍࡿⓎගࣆ࣮ࢡ㠃✚ࡢ↷ᑕࣃࣝࢫᩘ౫Ꮡᛶ࡛࠶ࡾࠊ᱁Ꮚ㛫ள㖄࡜᱁Ꮚ㛫㓟⣲ࡣ࢔ࢽ࣮ࣝฎ⌮࡟ࡼࡗ࡚ῶᑡࡍࡿࡢ࡟ᑐࡋࠊ࢖࢜ࣥ໬
㓟⣲✵Ꮝࡣቑຍࡍࡿࡇ࡜ࡀศ࠿ࡿࠋTHzἼࡢḞ㝗྾཰ࡣ࢔ࢽ࣮ࣝฎ⌮࡟ࡼࡾపῶࡉࢀࡿࡓࡵࠊTHzἼ྾཰ࡣ᱁Ꮚ㛫ཎᏊࡀ㛵୚ࡍࡿ࡜⪃࠼ࡽࢀࡿࠋࡇ
ࡢ࣮ࣞࢨ࣮ຍᕤ࡟࠾ࡅࡿ▱ぢࡣࠊ༙ᑟయຍᕤࡢᛂ
⏝⠊ᅖࢆᣑ኱ࡍࡿࡶࡢ࡛࠶ࡿࠋ
ࡲࡓࠊࡇࢀ௨እ࡟ࡶᚤ⣽ຍᕤ࡟ࡼࡗ࡚༙ᑟయᮦ
ᩱࡢ༨᭷⋡ࢆኚ࠼࡚ᖹᆒᒅᢡ⋡ไᚚࢆ⾜࠸ࠊගᏛ␗᪉ᛶᮦᩱࢆᐇ⌧ࡋ࡚࠸ࡿࠋࡇࢀࢆ఩┦ᯈ࡜ࡋ࡚⏝࠸ࡿࡇ࡜࡛೫ගไᚚࢆᐇ⌧ࡋ࡚࠾ࡾࠊ௒ᚋࡣࡇ
ࡢࡼ࠺࡞ᚤ⣽ᵓ㐀ࢆ౑⏝ࡋࡓTHzᖏ࡟࠾ࡅࡿ᭦࡞
ࡿගᏛ⣲Ꮚ㛤Ⓨࡀᮇᚅ࡛ࡁࡿࠋ

(a)

(b)

(c)

(d)

㉸▷ࣃࣝࢫ࣮ࣞࢨ࣮ຍᕤ⾲㠃ཬࡧ࢔ࢽ࣮ࣝฎ⌮㠃࡟࠾ࡅࡿ (a) ᱁Ꮚ㛫ள㖄㸪(b)᱁Ꮚ㛫㓟⣲㸪(c)୰ᛶ㓟⣲✵Ꮝ㸪(d)࢖࢜ࣥ໬㓟⣲✵Ꮝ㸦2౯㸧࡟㛵㐃ࡍࡿ㟁Ꮚ⥺ບ㉳Ⓨගࢫ࣌ࢡࢺࣝࣆ࣮ࢡ㠃✚ࡢ↷ᑕࣃࣝࢫᩘ౫Ꮡᛶࠋ
67㔠ᒓࢫࣆࣥࢺࣟࢽࢵࢡ⣲Ꮚ࡟ࡼࡿ㧗ຠ⋡ࢸࣛ࣊ࣝࢶἼⓎ⏕ࡢ◊✲㇂ ṇᙪ1 㸪୰ᔱ ㄔ2 㸪໭ཎ ⱥ᫂1,㸪ྂᒇ ᓅ1 㸪ࢱ࣭࣑ࣛࣛࢮࣝ 1 㸪࣐ࢢ࢘ࢧ࣭ࣦࣛ࢓ࣜࣥ2㸪࢚ࢫ࢝ࢽ࣭࣓ࣙ࢔ࣜࢡࣞ࢔1㸪ࣈࣝ࢝ࣜࣅࢵࢳ࣭ࢻ࣑ࢺࣜ3㸪Ώ㑔ㄔ3㸪㒌 ඼᪂41) ⚟஭኱Ꮫ 㐲㉥እ㡿ᇦ㛤Ⓨ◊✲ࢭࣥࢱ࣮㸪2) ኱㜰኱Ꮫ ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ 㸪3) ≀㉁࣭ᮦᩱ◊✲ᶵᵓ㸪4) బ㈡኱Ꮫ ࢩࣥࢡࣟࢺࣟࣥගᛂ⏝◊✲ࢭࣥࢱ࣮
SUMMARYᮏ◊✲ࡣගບ㉳࡟ࡼࡿࢫࣆࣥὶࢆ฼⏝ࡋࡓ㧗ຠ⋡࡞ THzἼⓎ⏕⣲Ꮚ(Fe/Ptࡢ㔠ᒓ2㔜ᒙࢫࣆࣥࢺࣟ
ࢽࢵࢡ⣲Ꮚ)ࡢ㛤Ⓨࢆ┠ⓗ࡜ࡍࡿࠋ௒ᖺᗘࡣ௨ୗࡢ
ྲྀࡾ⤌ࡳࢆ⾜ࡗࡓࠋ1) ๓ᖺᗘࡲ࡛ࡢ◊✲࡛㸪㔠ᒓࢫࣆࣥࢺࣟࢽࢵࢡ
࢔ࣥࢸࢼ⣲Ꮚࡢ㟁ᴟ㒊ࡢཌࡳࢆ3nm࠿ࡽ100nm
࡟ࡍࡿࡇ࡜࡛⣙2ಸ㸪200nm࡟ࡍࡿࡇ࡜࡛⣙6ಸ㸪ᨺᑕ᣺ᖜຠ⋡ࡀቑ኱ࡍࡿࡇ࡜ࡀ☜ㄆࡉࢀࡓࠋ
ࡉࡽ࡟㟁ᴟ㒊ࢆ300nm࡟ศཌࡃࡋࡓ࡜ࡇࢁ㸪ᨺᑕ᣺ᖜຠ⋡ቑ኱ࡣ⣙2.4ಸ࡟࡜࡝ࡲࡗࡓࠋࡇࡢ
ࡇ࡜࠿ࡽ࢔ࣥࢸࢼ㟁ᴟࡢ᭱㐺⭷ཌࡣ200nm௜㏆࡟࠶ࡿࡇ࡜ࡀศ࠿ࡗࡓࠋ
2) Fe/Ptࡢ㔠ᒓ2㔜ᒙࢫࣆࣥࢺࣟࢽࢵࢡ⣲Ꮚࡣ㔠ᒓ⾲㠃ࡢ㓟໬࡟ࡼࡾ⤒᫬ຎ໬ࡍࡿၥ㢟ࡀ࠶ࡗࡓࠋ
ᅗ. Fe/Pt㔠ᒓ2㔜ᒙࢫࣆࣥࢺࣟࢽࢵࢡ⣲Ꮚ࡟ࡼࡿTHzἼࡢࡑࡢࡓࡵ⾲㠃ࢆ࢔࣑ࣝࢼ(Al2O3)࡛ಖㆤ⭷ࢥ࣮᫬㛫㡿ᇦἼᙧࠋᕥ࠿ࡽ࢔ࣥࢸࢼᵓ㐀↓ࡢ⣲Ꮚ㸪࢔ࣥࢸࢼࢺࡍࡿฎ⌮ࢆ⾜ࡗࡓࠋಖㆤ⭷࡟ࡼࡿຠ⋡పୗ㸦▴ᙧ㸧㟁ᴟPt⭷ཌ300nmࡢ⣲Ꮚ㸪࢔ࣥࢸࢼ㟁ᴟ(Pt㸻ࡣᨺᑕ᣺ᖜ࡛⣙20%࡛࠶ࡿࡇ࡜ࡀศ࠿ࡗࡓࠋ
300nm)࡟࢔࣑ࣝࢼࢆಖㆤࢥ࣮ࢺࡋࡓሙྜࡢTHzἼᙧࠋ
68

Crystal phase identification and imaging of biominerals by terahertz spectroscopy୸ᒣ⨾ᕹᏊ1㸪ሯᮏ຾⏨2㸪ྂᕝၿ༤2㸪⏣୰ຬኴᮁ1,3㸪୰ᔱㄔ4㸪᳃ຬ௓1㸪ྜྷᮧᨻᚿ41) ኱㜰኱Ꮫ኱Ꮫ㝔ᕤᏛ◊✲⛉㸪2) ᮾ໭኱Ꮫ኱Ꮫ㝔⌮Ꮫ◊✲⛉ࠊ3)ྡྂᒇᕷ❧኱Ꮫ་Ꮫ㒊㸪4) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ
SUMMARYࠐΏ೚࿑݃੶Ͷ‫༙͠؜‬ΗΖϨϱ࢐ΩϩεΤϞ‫ܧ‬݃ধ͹҈ఈ૮Ͳ͍ΖΠϏν΢φʤ+$Sʥͳɼ६҈
ఈ૮Ͳ͍ΖϨϱ࢐ൂΩϩεΤϞʤ2&3ʥɼ୊್Ϩϱ࢐ΩϩεΤϞʤ'&3'ʥ͹ਜ਼֮͵݃ধ૮ಋఈ͹ͪΌͶɼτϧϖϩς྘ҮͶ͕͜Ζ੼֐෾ޭ෾ੵൕ
ࣻηϘέφϩΝखಚͪ͢ɽ'&3'ͺ)LJͶࣖͤ௪Εɼ
+$Sɼ2&3ͳηϘέφϩ͹ಝ௅͗୉͚͘ҡ͵ΖɽҲ๏ɼ2&3ͳ+$SͺɼಝͶ 7+]Ͷϒʖέ͹
ҩ͏͍͗ΖͪΌɼ͞ΗΝघ͖͗ΕͶ૮ಋఈ͗Ն೵
Ͳ͍ΖɽগཔదͶͺɼࠐ‫ؖ‬࿊Ϩϱ࢐ΩϩεΤϞ͹
ԗ੼֐ʙτϧϖϩς྘Ү͹෾ޭָదಝ੓Νཤ༽ͤ
Ζ͞ͳͲɼඉ৷ऽͶࠐࢾྋ͹৆ࡋ͵෾ޭָద଎ఈ
ࣰ͗‫͘Ͳݳ‬ΖՆ೵੓͍͗ΖɽFIG. Absorption coefficient spectra of 3 wt.% DCPD, OCP,
HAp. The characteristic absorption peaks have been labeledwith black dash lines.
69ඹ᣺ჾࢆ⏝࠸ࡓࢫࣆࣥࢺࣟࢽࢵࢡࢸࣛ࣊ࣝࢶ࢚࣑ࢵࢱ࣮࠿ࡽᨺᑕࡉࢀࡓࢸࣛ࣊ࣝࢶἼࡢቑᙉ
⳯ᔱⱱ႐11) ኱㜰බ❧኱Ꮫ

ࡲ࡜ࡵ

200μ

Amplitude (V)ඹ᣺ჾᢏ⾡ࢆ⏝࠸࡚ࢫࣆࣥࢺࣟࢽࢵࢡ࡞
150μ
THzἼⓎ⏕⣲Ꮚ㸦STE࡜グࡍ㸬኱㜰኱࡛స100μ〇㸧ࡢቑᙉࢆ┠ᣦࡋ㸪ึᖺᗘࡣSTE༢య࠿
50μࡽࡢTHzἼᨺᑕ≉ᛶࢆㄪ࡭ࡿⅭࡢࢸࣛ࣊ࣝ
0ࢶ᫬ 㛫㡿ᇦศගࢩࢫࢸ࣒ࢆస〇ࡋࡓ㸦ྑ
-50μ
5 6 7 8 9 10 11 12 13 14 15
ᅗ㸧㸬STEࡢ≉㛗࡛࠶ࡿ㉸㧗㏿ᛂ⟅࡟క࠺
Time (ps)ᗈᖏᇦ໬ࢆᮇᚅࡋ࡚㸪ບ㉳࣮ࣞࢨ࣮ࡣࣃࣝ
1x10
ࢫᖜ50fsࡢࢳࢱࣥࢧࣇ࢓࢖࢔࣮ࣞࢨ࣮Ⓨ᣺ჾࢆ⏝࠸㸪㍈እࡋᨺ≀㠃㙾࡜ࢲ࢖࣏࣮ࣝᆺ
1x10
ࡢගఏᑟ࢔ࣥࢸࢼ⣲Ꮚࢆ౑⏝ࡋ࡚࠸ࡿ㸬⣙
300 mTࡢ☢ሙୗ࡛STE࠿ࡽᚓࡽࢀࡓTHzἼ
1x10Ἴᙧ࡜ࣇ࣮࢚ࣜ᣺ᖜࢫ࣌ࢡࢺࣝࢆࡳࡿ࡜㸪3
1x10
THz௜㏆ࡲ࡛ࡢࢫ࣌ࢡࢺࣝࡀ⌧ᅾᚓࡽࢀࡓ㸬
0
1
2
3
4
5
Frequency (THz)௒ᚋࡣ㸪ගఏᑟ࢔ࣥࢸࢼ⣲Ꮚࡢ㓄⨨ࡢ᭱㐺ᕥᅗ㸸STE㸦኱㜰኱࡛స〇㸧༢య࠿ࡽࡢTHzἼᨺᑕ≉ᛶ໬࡜ບ㉳࣮ࣞࢨ࣮ࡢ▷ࣃࣝࢫ໬㸪࠾ࡼࡧඹࢆㄪ࡭ࡿⅭࡢࢸࣛ࣊ࣝࢶ᫬㛫㡿ᇦศගࢩࢫࢸ࣒㸬᣺ჾຠᯝࢆぢ㉺ࡋࡓ⣔࡬ࡢኚ᭦ࢆ⾜࠺ணᐃྑᅗ㸸STE࠿ࡽᨺᑕࡉࢀࡓTHzἼἼᙧ࡜ࣇ࣮࢚ࣜኚ᥮᣺
࡛࠶ࡿ㸬
Amplitude (V)

-5

-6

-7

-8

ᖜࢫ࣌ࢡࢺࣝ㸬70ࢸࣛ࣊ࣝࢶ᫬㛫㡿ᇦ࢚ࣜࣉࢯ࣓࣮ࢱ࣮ࢆ⏝࠸ࡓගບ㉳࢟ࣕࣜ࢔ࡢホ౯༡ ᗣኵ1, ୰ᔱ ㄔ21)᪥ᮏ኱Ꮫ⏕⏘ᕤᏛ㒊 , 2)኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ

SUMMARY

250㏻ᖖࡢࢸࣛ࣊ࣝࢶἼ࡟ࡼࡿ㟁Ꮚ≀ᛶィ ࡛ࡣࠊ㟁Ꮚ≀ᛶࡀ᪤▱ࡢཧ↷ヨᩱࡢࢹ࣮ࢱࢆྲྀᚓࡋ࡚ࠊ
ᑐ㇟࡜ࡍࡿヨᩱࡢࢹ࣮ࢱ࠿ࡽ㟁Ꮚ≀ᛶࢆᚓࡿࠋࡋ
ࡓࡀࡗ࡚ࠊཧ↷ヨᩱ࡜ᑐ㇟࡜ࡍࡿヨᩱࡢ ᐃ᮲௳ࢆཝᐦ࡟ᥞ࠼ࡿᚲせࡀ࠶ࡿⅬ࠿ࡽࠊⷧ⭷࡞࡝ࡢ㟁Ꮚ≀ᛶ ᐃࡣ୍⯡࡟㞴ࡋ࠸ࠋࢸࣛ࣊ࣝࢶ࣭࢚ࣜࣉ
ࢯ࣓ࢺ࣮ࣜࡣཧ↷ಙྕ↓ࡋ࡟ヨᩱࡢ㟁Ꮚ≀ᛶࢆㄪ࡭ࡿࡇ࡜ࡀ࡛ࡁࡿࡓࡵࠊୖ㏙ࡢࡼ࠺࡞ᐇ㦂ⓗ࡞㞴ࡋࡉࡣ⦆࿴ࡉࢀࡿࠋᮏ◊✲࡛ࡣࠊⷧ⭷㈨ᩱ࡜ࡋ࡚
༢ᒙࢢࣛࣇ࢙ࣥࡢ㟁Ꮚ≀ᛶࡢ ᐃྍ⬟ᛶࢆ᥈ࡿࠋ
ᅗ࡟ࢸࣛ࣊ࣝࢶ࣭࢚ࣜࣉࢯ࣓ࢺ࣮ࣜ࡟ࡼࡗ࡚ᚓࡽ
ࢀࡓ」⣲ㄏ㟁⋡ࡢᐇ㒊࡜⹫㒊ࢆ㟷Ⰽࡢ‫ۑ‬༳࡜㉥Ⰽࡢ‫ۑ‬༳࡛ࡑࢀࡒࢀ♧ࡍࠋࡲࡓࠊDrudeࣔࢹ࡛ࣝ⾲ࡉࢀࡿ」⣲ㄏ㟁⋡ࡢ⌮ㄽ᭤⥺ࢆ ᐃ⤖ᯝ࡟ࣇ࢕ࢵࢺ
ࡋࡓࡶࡢࢆᐇ⥺࡛♧ࡍࠋࣛࣥࢽࣥࢢࣃ࣓࣮ࣛࢱ࣮
࠿ࡽࠊࣉࣛࢬ࣐࿘Ἴᩘࡣ3.31012 rad/sࠊῶ⾶ᐃᩘ
ࡣ7.01011 rad/s࡜ồࡵࡽࢀࡓࠋ

200

Dielectric

150
100
50
0
-50
-100
1

12
2
3 x10
Frequency (Hz)FIG. 」⣲ㄏ㟁⋡ࡢᐇ㒊㸦䕿㸧࡜⹫㒊㸦䕿㸧ࡢ࿘Ἴᩘ౫
Ꮡࠋᐇ⥺ࡣࢻ࣮ࣝࢹࣔࢹࣝ࡟ࡼࡿࣇ࢕ࢵࢺ᭤⥺࡛࠶ࡿࠋ71ࣆࢥ⛊ࢩ࣮ࢺ≧㟁Ꮚࣂࣥࢳࡢ⏕ᡂ࡜THzᖏࢫ࣑ࢫ࣭ࣃ࣮ࢭࣝᨺᑕග※ࡢ㛤Ⓨῦᕝ ㄔ1, ୰ᔱ ㄔ2, …
1) 㛵す኱Ꮫ, 2)኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ
Please modify the frame size if necessary.
SUMMARY๓ᖺᗘࡢ◊✲࡟ࡼࡾ㉸▷ࣃࣝࢫࢩ࣮ࢺ㟁Ꮚࣅ࣮࣒ࡣ▷㍈᪉ྥ࡟ᙉࡃⓎᩓࡍࡿࡇ࡜ࡀࢃ࠿ࡗࡓࠋᮏᖺᗘ
ࡣࠊຍ㏿㟁ᅽ10 kVࡢձ▷㍈᪉ྥࡢ⮬ᕫⓎᩓሙࢆ⿵ൾ
ࡍࡿ཰᮰㟁ᴟࢆ᭷ࡍࡿග㟁㝜ᴟ㝜ᴟࠊ࠾ࡼࡧղ㔠ᒓᑤ㢌㒊࡟⏕ࡌࡿᙉ࠸㟁ሙࢆ฼⏝ࡋ㟁Ꮚࢆຍ㏿ࡍࡿ୕ゅᰕග㟁㝜ᴟࠊࢆෆⶶࡍࡿ㸰✀㢮ࡢ㟁Ꮚ㖠ࡢᩘ್ゎᯒ࠾ࡼࡧタィࢆ⾜࡞ࡗࡓࠋ཰᮰㟁ᴟෆⶶᆺ㟁Ꮚ㖠࡛ࡣࠊ㣬࿴㟁ὶᐦᗘ࡛ືసࡍࡿሙྜ࡛࠶ࡗ࡚ࡶ༑ศ࡞
཰᮰ຊࡀᚓࡽࢀࡿࡇ࡜ࡀࢃ࠿ࡗࡓࠋࡋ࠿ࡋ࡞ࡀࡽ㧗㟁ὶᐦᗘ࡛ࡢືస࡛ࡣࣃࣝࢫᖜࡀ㛗ࡃ࡞ࡿࡇ࡜࠿ࡽࠊ
㣬࿴㟁ὶᐦࡢ20%⛬ᗘࡢືసࡀ᭱㐺࡛࠶ࡿࡇ࡜ࡀࢃ
࠿ࡗࡓࠋ୍᪉࡛୕ゅᰕᆺ㝜ᴟࡢ⾲㠃࡟ࡣ཰᮰㟁ᴟෆⶶᆺ㝜ᴟࡢ4ಸࡢຍ㏿㟁ሙࡀ⏕ࡌࡿࠋࡑࡢᙧ≧ࡢࡓࡵ㝜ᴟ㏆ഐ࡛ࡢⓎᩓࡀᠱᛕࡉࢀࡓࡀࠊ཰᮰㟁ᴟᆺ㝜ᴟ࡜ྠࡌ㟁ὶᐦᗘ࡛࠶ࢀࡤບ㉳ࡋࡓග㟁Ꮚࡢ90%ࢆ㝧ᴟ࠿ࡽฟຊ࡛ࡁࡿࠋࡲࡓᙉ࠸ຍ㏿㟁ሙࡢࡓࡵࣃࣝࢫ
ᖜࡢఙ㛗ࡀᢚไࡉࢀࡿࠋ
ప࢚ࢿࣝࢠ࣮㉸▷ࣃࣝࢫࢩ࣮ࢺ㟁Ꮚࣅ࣮࣒ࡣࢫ࣑
ࢫ࣭ࣃ࣮ࢭࣝᨺᑕࡢࡼ࠺࡞2ḟඖᵓ㐀࡜㟁Ꮚࡢ┦஫స⏝࡟ࡼࡾᨺᑕࢆㄏⓎࡍࡿࢱ࢖ࣉࡢග※ࡔࡅ࡛࡞ࡃࠊ
ultrafast electron microscopy࡬ࡢᛂ⏝ࡶᮇᚅ࡛ࡁࡿࠋ
72ᅗࠋ཰᮰㟁ᴟᆺග㟁㝜ᴟཬࡧ୕ゅᰕග㟁㝜ᴟࢆ᭷ࡍࡿ㟁Ꮚ㖠ࠋୗẁࡣ཰᮰㟁ᴟᆺ㟁Ꮚ㖠ࡢࢩ࣑࣮ࣗࣞࢩࣙࣥ⤖ᯝ࡛࠶ࡿࠋ㟁Ꮚࣅ࣮࣒ࡣᨺฟ┤ᚋ߬ = 0.25ࡲ࡛ࡣⓎᩓࡍࡿࡀࠊ௨㝆ࡣ཰᮰ࡉࢀࡿࠋࣃࣝࢫᖜࡣ߬ = 0.5௨㝆࡛ᛴ⃭࡟ఙࡧࡿࠋࣉࣛࢬࣔࣥගఏᑟ࢔ࣥࢸࢼࢆ⏝࠸ࡓ࣮ࣞࢨ࣮࢝࢜ࢫග࡟࠾ࡅࡿ࣮ࣔࢻࡢྠ᫬ᛶࡢゎ᫂᱔ᓥྐḠ 1 , Mona Jarrahi2, Semih Cakmakyapan2, ᳃ᕝ ἞3,ⓑᑿ ᣅஓ1, ᒾᑿ ᠇ᖾ1, ᰩཎ ୍჆4, ໭ཎ ⱥ᫂5,࿴⏣ ೺ྖ6,୰ᔱㄔ7, ཎཱྀ㞞ᐉ8, ㇂ ṇᙪ51) ⚟஭ᕤᴗ኱Ꮫࠊ2) ࢝ࣜࣇ࢛ࣝࢽ࢔኱Ꮫࠊ3) ᾏୖಖᏳ኱Ꮫᰯࠊ4) ⚟஭኱Ꮫᩍ⫱Ꮫ㒊ࠊ5) ⚟஭኱Ꮫ㐲㉥ࢭࣥࢱ࣮ࠊ6) ኱㜰බ❧኱Ꮫ㟁Ꮚᩘ≀⣔ࠊ7) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤࠊ8)ᚨᓥ኱Ꮫ
3

Magnitude

SUMMARYࡇࢀࡲ࡛ࠊᕷ㈍ࡢ༙ᑟయ࣮ࣞࢨ࣮㸦ᩘⓒ෇㸧࡟
RF Spectrumእ㒊㙾࡟ࡼࡿගᏛⓗ㐜ᘏᖐ㑏ࢆ࠿ࡅࡿࡇ࡜࡛࣮ࣞ
analyzerLow noisefࢨ࣮࢝࢜ࢫⓎ᣺ࡉࡏࠊᏳᐃࠊᗈᖏᇦࠊప౯᱁࡞
amplifier
THzࡢⓎ⏕᳨ฟࡀ࡛ࡁࡿࡇ࡜ࢆド᫂ࡋ࡚ࡁࡓࠋࡇ
Chaos
laser
ࡢཎᅉ࡜ࡋ࡚ࡣࠊ࣮ࣞࢨ࣮ࡢ⦪࣮ࣔࢻࡢྠ᫬Ⓨ᣺
Terahertz
Prototypeᛶࡀ㔜せ࡛࠶ࡿࠋᅗ㸯࡟♧ࡍࠊእ㒊࠿ࡽ㏴ಸჾ࡟
sourceterahertz receiverࡼࡿTHzἼࢆຍ࠼ࠊ⦪࣮ࣔࢻ㛫ࡢගࣅ࣮ࢺ࿘Ἴᩘ
Plasmon Antenna
࡜ࡢᕪࢆ1GHz⛬ᗘ࡜ࡋࠊRF㡿ᇦ࡛ほ ࡋࠊࡑࡢᏳᐃᛶࢆホ౯ࡍࡿࡇ࡜࡛ࠊ࣮ࣔࢻࡢྠ᫬ᛶࢆホ౯
UCLA systemࡋࡓࠋ௒ᅇࡣࠊRFฟຊࡀ࢝࢜ࢫග࡜ࡍࡿࡇ࡜࡛
10dB⛬ᗘቑᙉࡍࡿࡇ࡜ࢆ♧ࡋࡓࠋࡲࡓࠊᡠࡾගࢆ
ຍ࠼ࡓከ࣮ࣔࢻࡢ༙ᑟయ࣮ࣞࢨ࣮᪉⛬ᘧࢆ⏝࠸࡚ࠊ㐜ᘏᖐ㑏ࡢࡳ࡛࣮ࣔࢻࡀ⮬ᚊⓗ࡟ྠᮇࡋ࡚ࡺࡃ㡿ᇦࡀ࠶ࡿࡇ࡜ࡶぢฟࡋࡓࠋ௒ᚋࡇࢀࡽࡢヲ⣽࡟ࡘ࠸࡚ㄪᰝࡋ࡚ࡺࡃࠋࣉࣛࢬࣔࣥගఏᑟ࢔ࣥࢸࢼࡢ
FIG. Rf 㡿ᇦ࡟ୗ᪉ኚ᥮ࡍࡿᐇ㦂⣔ไస࡟࠾࠸࡚ࡶಶࠎࡢ㒊ศ࡟ࡘ࠸࡚ࡢヨసࢆ⾜ࡗࡓࡢ࡛඲యࡢไసࢆ⾜࠺ࠋࡇࢀࡽࢆ㏻ࡌ࡚࢝࢜ࢫ
࡛࡞ࡅࢀࡤ࡞ࡋ࠼࡞࠸≉ᛶ㸦࢝࢜ࢫ㉸㉺ᛶ㸧ࡢᐇ
ドࢆ⾜࠺ࠋ
73

࣏ࢫࢺ㸳G/㸴㹅࡟ྥࡅࡓࢸࣛ࣊ࣝࢶἼᖏᮦᩱホ౯ᢏ⾡ࡢ㛤Ⓨ࡜ࢹࣂ࢖ࢫᛂ⏝∾㔝Ꮥኴ㑻1, Verdad C. Agulto2, ୰ᔱㄔ21) ⏘ᴗᢏ⾡⥲ྜ◊✲ᡤ ࢹࣂ࢖ࢫᢏ⾡◊✲㒊㛛 2) ኱㜰኱Ꮫ ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ

SUMMARY(a)2030ᖺ௦࡟ࡣ㸴G㏻ಙࡀၟ⏝໬ࡉࢀࡿ࡜ぢ㎸ࡲࢀ࡚࠾ࡾࠊࡑࢀ࡟ྥࡅࡓྛ✀ࡢࢹࣂ࢖ࢫࡢ㛤Ⓨࡀᛴົ࡜࡞ࡗ࡚࠸ࡿࠋࢹࣂ࢖ࢫタィ࡟ࡣᮦᩱࡢ≉ᛶࢆ㐺ษ࡟ホ౯ࡋࠊ཯ᫎࡉࡏࡿࡇ࡜ࡀ୙ྍḞ࡛࠶ࡿࡀࠊ≉࡟ࠊ ᐃࡀ㞴ࡋ࠸ࡓࡵࠊ㔠ᒓᮦᩱࡢࢸࣛ࣊
ࣝࢶἼᖏ࡛ࡢ≉ᛶࡣ༑ศ࡟ホ౯ࡉࢀ࡚࠸ࡿ࡜ࡣゝ࠼࡞࠸ࠋᮏ◊✲࡛ࡣ㔠ᒓⷧ⭷࡟ᑐࡋ࡚ࢸࣛ࣊ࣝࢶ
Ἴ᫬㛫㡿ᇦศගࡸࢸࣛ࣊ࣝࢶἼ᫬㛫㡿ᇦ࢚ࣜࣉࢯ
࣓ࢺ࣮ࣜ ᐃࢆᐇ᪋ࡋࡓࠋ㔠ᒓ࡟ᑐࡍࡿ౵ධ㛗(ᩘ༑nm)ࡼࡾࡶ㔠ᒓ⭷ࡀཌ࠸ሙྜࠊゎᯒ࡟࠾࠸࡚㔠ᒓᒙࢆࣂࣝࢡ࡜ࡳ࡞ࡍࡇ࡜ࡀ࡛ࡁࡿࡓࡵࠊⷧ⭷ࡢሙྜࡼࡾゎᯒࡀᐜ᫆࡟࡞ࡾࠊ㧗⢭ᗘ࡟ ᐃࡀᐇ⌧࡛ࡁࡿ࡜⪃࠼ࡓࠋࡋ࠿ࡋࠋᐇ㝿࡟ ᐃࢆ⾜ࡗࡓ⤖ᯝࠊ౵ධ㛗ࡼࡾࡶⷧ࠸㔠ᒓ⭷ࡢ࡯࠺ࡀDrudeࣔࢹ࡛ࣝࡢࣇ࢕ࢵࢸ࢕ࣥࢢㄗᕪࡀᑡ࡞ࡃࠊࡼࡾṇ☜࡞ᐃࡀᐇ᪋࡛ࡁࡿྍ⬟ᛶࢆぢฟࡋࡓࠋࡲࡓࠊ⭷ཌࡢ㐪࠸࡟ࡼࡿࢧ࢖ࢬຠᯝࡸࠊ␗࡞ࡿ✀㢮ࡢ㔠ᒓࡢ┦ᑐⓗ࡞ホ౯ࢆ⾜࠺ୖ࡛ࡶⷧ⭷ࢆ⏝࠸ࡿ࡯࠺ࡀᮃࡲ
ࡋ࠸࡜࠸࠺⤖ㄽࢆᚓࡓࠋ

(b)

FIG.1 ࢸࣛ࣊ࣝࢶἼࡢ౵ධ㛗ࡼࡾࡶཌ࠸㔠ⷧ⭷㸦⭷ཌ
200nm௨ୖ㸧ࡢࢸࣛ࣊ࣝࢶἼ࢚ࣜࣉࢯ࣓ࢺ࣮ࣜࡢ ᐃ⤖ᯝࠋ㉥Ⰽᐇ⥺ࡀ」⣲ᒅᢡ⋡ࡢᐇ㒊㸦ᐇ㦂್㸧ࠊ㉥Ⰽ◚⥺ࡀ」⣲ᒅᢡ⋡ࡢ⹫㒊㸦ᐇ㦂್㸧ࠋ㟷Ⰽᐇ⥺ࠊ◚⥺ࡣࡑࢀ
ࡒࢀDrudeࣔࢹࣝ࡟ᇶ࡙ࡃ」⣲ᒅᢡ⋡ࡢᐇ㒊ࠊ⹫㒊ࡢࣇ࢕ࢵࢸ࢕ࣥࢢ࣮࢝ࣈࠋᙜึࡢ᝿ᐃ࡜ࡣ␗࡞ࡾࠊDrudeࣔࢹ࡛ࣝࡣᐇ㦂್ࡢࣇ࢕ࢵࢸ࢕ࣥࢢࡀ࠺ࡲࡃ࡛ࡁࡎࠊಙ
㢗ᛶࡢ㧗࠸⤖ᯝࡣᚓࡽࢀ࡞࠿ࡗࡓࠋ
74ᨺᑕᛶởᰁỈ࡟࠾ࡅࡿࢸࣛ࣊ࣝࢶ࡜⣸እගࢆ⏝࠸ࡓࢺࣜࢳ࣒࢘ࡢ㑅ᢥⓗ㝖ᰁࡢ᳨ウᑠᯘ࠿࠾ࡾ1㸪⊷಴ಙᙪ21) ᐩᒣ኱Ꮫ㸪2) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ

SUMMARY

Deviation from experimental
value (cm-1)

ᨺᑕᛶởᰁỈ࠿ࡽࡢࢺࣜࢳ࣒࢘ࡢ㝖ཤࡣ㔜せ࡞
25
20
ㄢ㢟࡛࠶ࡿࠋ㧗ຠ⋡࡛ࡢ㝖ཤ࡟ᑐࡋࠊ㉥እග࡜⣸
15እග࡟ࡼࡿከගᏊ࢖࢜ࣥ໬ࢆ⏝࠸ࡿࡇ࡜࡛ᐇ㦂ࢆ
10ணᐃࡋ࡚࠸ࡿࠋࢸࣛ࣊ࣝࢶගࡣศᏊ㔞ࡢࣔࢽࢱ࣮
5࡟⏝࠸ࡿࠋࡇࡢᡭἲࡣࢺࣜࢳ࣒࢘ࡢࡳࡢ㧗ຠ⋡ศ0㞳ࡋ࡚㝖ཤ࡜࡞ࡾ኱ࡁ࡞࢖ࣥࣃࢡࢺࡀ࠶ࡿࠋ
-5 0 1000 2000 3000 4000 5000 6000 7000 8000ᮏᖺᗘࡣᐇドᐇ㦂࡜ࡋ᳨࡚ウࡉࢀ࡚࠸ࡿHDOࡢ
-10࢖࢜ࣥ໬࡟ᚲせ࡞㉥እගࡢἼ㛗࡟ࡘ࠸࡚㆟ㄽࢆ㐍-15-20ࡵࡓࠋ㐣ཤࡢ㉥እศගࡢゎᯒ⤖ᯝ࠿ࡽ᣺ືᩘ࡜㠀-25ㄪ࿴ᐃᩘࢆồࡵࠊᵝࠎ࡞᣺ື≧ែࡢண ್ࢆ⏕ᡂEnergy levels (cm-1)
ࡋࡓࠋඛ⾜◊✲ࡢᐇ㦂್ࡼࡾ㧗࠸ศゎ⬟ࡢᐇ㦂್࡟ࡼࡿ᪂ࡋ࠸᣺ືᩘࠊ㠀ㄪ࿴ᐃᩘࢆ2㏻ࡾࡢࢹ࣮ࢱ
ྖࢢԿָ‫ ࢋܯ‬઎ߨ‫ ڂݜ‬ຌ‫ڂݜ‬1 ຌ‫̐ڂݜ‬ࡢ⤌ࡳྜࢃࡏ࡛ᦤືࡣ⪃៖ࡏࡎồࡵࡓࠋࡇࢀࡽ࡜
㔞Ꮚ໬Ꮫィ⟬(https://spectra.iao.ru/home)ࡢ⤖ᯝࢆᐇ㦂್࡜ẚ㍑ࡋ࡚᭷ຠᛶࢆ᳨ウࡋࡓࠋ
FIG. HDOࡢ࢚ࢿࣝࢠ࣮‽఩ࡢᐇ㦂್࡜ࠊ㔞Ꮚ໬Ꮫィ⟬ࠊ
⣙7500 cm-1௨ୗ࡟࠾࠸࡚ࡣࠊศගゎᯒ࠿ࡽࡢ್
᣺ືゎᯒ㸦ඛ⾜◊✲ *ࠊᮏ◊✲࡛␗࡞ࡿࢹ࣮ࢱࡢ⤌ࡳྜ࡜ᐇ㦂್ࡢࡎࢀࡣᦤືࡢᏑᅾࢆ♧၀ࡋ࡚࠸ࡿࠋ୍
ࢃࡏࢆ⏝࠸࡚2㏻ࡾ࡛ồࡵࡓࡶࡢ㸧ࡢ⤖ᯝ࠿ࡽࡢࡎࢀ
᪉࡛ࠊ㔞Ꮚ໬Ꮫィ⟬ࡣ඲㡿ᇦ࡛Ⰻዲ࡛࠶ࡾࠊ௒ᚋ
ࡢἼ㛗㑅ᢥ࡟᭷ຠ࡛࠶ࡿ࡜☜ㄆࡍࡿࡇ࡜ࡀ࡛ࡁࡓࠋ * O. Hálová, Czechoslov. J. Phys. 15 (1965) 267.
75ࢸࣛ࣊ࣝࢶᖏ࡟࠾ࡅࡿ㗦ᓧ໬ࡉࢀࡓ㏱㐣ࢫ࣌ࢡࢺࣝࢆ᭷ࡍࡿ㔠ᒓ㛤ཱྀࡢస〇⳯ᔱⱱ႐11) ኱㜰බ❧኱Ꮫࡲ࡜ࡵ ޲͠͹ҩ͑̒झྪ͹ϛϨ΢ϝχϓΡϩϞ
(t=12.5,25,50,75 μm)ΝͨΗͩΗ͹3ʹ3֋޳Ͷ෉஥ͦ͠ͱɾఁबഀεϓφΝ௒ࠬͪ͢ɿ
1.0

ᶇ

ᶈ

ᶉ

0.15

0.6

w/o film

0.4

w/ 12.5-ȝmthick film

ǻf (THz)

Transmittance

30 ȝm

0.8

0.2

ᶆ

2 mm

90 ȝm

㔠ᒓⷧᯈ࡟࿘ᮇⓗ࡞㛤ཱྀࡀ᪋ࡉࢀࡓ㔠ᒓ࣓ࢵࢩࣗ࡟ぢࡽࢀࡿ㏱㐣Dipᵓ㐀ࢆ⏝࠸ࡓึࡢ࣐࢖ࢡࣟ࢔ࣞ࢖ࣂ࢖࢜ࢭࣥࢩࣥࢢ໬ࢆ┠ᣦࡋ㸪㛤ཱྀᙧ≧࡟⏤᮶ࡍࡿᵓ㐀ඹ㬆ࡢᒁᅾ໬࡟᭱㐺࡞㛤ཱྀᙧ≧ࡢㄪᰝ㸦኱㜰බ኱࡛ᐇ᪋㸧࡜స〇᪉ἲ࡟ࡘ࠸᳨࡚ウࡋࡓ㸦኱㜰኱࡜኱㜰බ኱࡜࡛ᐇ᪋㸧 㸬௒ᖺᗘࡣࣜࢵࢪᙧᆺ㛤ཱྀ࡟ὀ┠ࡋ㸪FDTD㟁☢⏺ィ⟬࡛タィࡋࡓ㸪33㛤ཱྀ⩌㸦኱ࡁ
ࡉࡣ3.6Ȝ࡟┦ᙜ㸧ࢆ5ࡘ㓄ิࡉࡏࡓ㔠ᒓ࣓ࢵࢩࣗࢆ࣮ࣞࢨ࣮ຍᕤ࡛స〇ࡋࡓ㸦ྑᅗ㸧㸬ྛ㛤ཱྀ⩌࡟3.6Ȝ⛬ᗘࡢ኱ࡁࡉTHzἼࣅ࣮࣒ࢆ
ྠ᫬࡟↷ᑕࡋࡓ⤖ᯝ㸪ヨᩱࢆ௜╔㔞࡟ᛂࡌ
ࡓ㏱㐣ࣆ࣮ࢡࡢ࿘Ἴᩘࢩࣇࢺࡀ☜ㄆࡉࢀ㸪
㏱㐣Dipᵓ㐀ࢆ⏝࠸ࡓ࣐࢖ࢡࣟ࢔ࣞ࢖ࢭࣥࢩ
ࣥࢢࢆึࡵ࡚ᐇドࡋࡓ㸬

ᶅ

0.10
0.05
0.00

0.0
0.0

0.5

1.0

Frequency (THz)

1.5

0

10 20 30 40 50 60 70 80
Thickeness (ȝm)

12.5 μm޲͹ࢾྋʤ༁17.84 ʅgɾॊཔ͹1/100ఖౕʥ͹ιϱεϱήͶ੔ޯ3ʹ3ഓ྽͹Ϩρζ‫޳֋ܗ‬Ν༽͏ͪMAιϱεϱήࣰ͗ৄͲͪ͘

ᅗ㸬YAG࣮ࣞࢨ࣮࡛స〇33㛤ཱྀ⩌ࡀ5ࡘ㓄ิࡋࡓ㔠ᒓ࣓ࢵࢩࣗࡢ⏬ീ㸦ྑୖ㸧㸬⏬ീࡣྑഃࡢ㛤ཱྀ⩌࡟ཌࡉࡢ␗࡞ࡿ࣏ࣜ࢖࣑ࢻࣇ࢕࣒ࣝ␲ఝヨᩱࢆ௜╔ࡉࡏ࡚࠸ࡿ㸬76ॄޭ߶࣏ޭࢢͶΓΖ৿‫࣏߶و‬ηϒϱয়ସ͹ࣰ‫ݳ‬᳃⏣ ೺ 1㸪୰ᔱ ㄔ 2㸪1) ༓ⴥ኱Ꮫ㸪2) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ

SUMMARYᮏ◊✲ࡢ┠ⓗࡣࠊ㞟ගࡋࡓ㧗ḟගᏊࡀ༙ᑟయ୰ࡢ㟁Ꮚ⣔࡬࡟㌿෗ࡀᐇ⌧ࡉࢀࡿࡢ࠿᫂ࡽ࠿࡟ࡍࡿࡶ
ࡢ࡛ࠊձ㔞Ꮚ≧ែࡢ㌿෗࡜ղຊᏛ
ⓗ࡞ࢺࣝࢡࡀ࡝ࡢࡼ࠺࡟స⏝ࡍࡿࡢ࠿࡟ࡘ࠸࡚ㄪ࡭࡚࠸ࡿࠋ24ᖺᗘ࡛ࡣࠊࡲࡎࡣ㧗ḟගᏊࡢࢡ࣮ࣟࣥ
ຊ࡜࣮ࣟࣞࣥࢶຊࢆ௬ᐃࡋࡓ㟁☢
ຊ࡟ࡼࡗ࡚༙ᑟయ୰ࡢ⮬⏤㟁Ꮚࡀ࡝ࡢࡼ࠺࡞⛣ືࡍࡿࡢ࠿࡟ࡘ࠸࡚
ࢩ࣑࣮ࣗࣞࢩࣙࣥࡋࡓ㸦Fig. 1(a)㸧ࠋᙉᗘࡀᙅ࠸㧗ḟගᏊ࡛ࡣࠊ࣏ࣥࢹ
࣮ࣟࣔࢸ࢕ࣈຊࡀస⏝ࡋࠊᙉ࠸ᙉᗘ࡛ࡣゅ㐠ື㔞࡟౫ᏑࡍࡿຊᏛⓗࢺࣝࢡࡀస⏝ࡍࡿࡇ࡜ࡀศ࠿ࡗࡓ
㸦Fig. 1(b)㸧ࠋ

FIG. (a) 㧗ḟගᏊࡢ㟁☢ຊ࡟ࡼࡿ༙ᑟయ୰ࡢ㟁Ꮚࡢኚ఩ࢆㄪ࡭ࡓࠋ(b) ᙉᗘࡀᙅ࠸㧗ḟගᏊ࡛ࡣࠊ࣏ࣥࢹ࣮ࣟࣔࢸ࢕ࣈຊࡀస⏝ࡋࠊᙉ࠸ᙉᗘ࡛ࡣゅ㐠ື㔞࡟౫ᏑࡍࡿຊᏛⓗࢺࣝࢡࡀస⏝ࡋࠊ㟁Ꮚࡣࡽࡏࢇ≧࡟ືࡃࠋ㌶㐨ゅ㐠ື㔞࡜ࢫࣆࣥゅ㐠ື㔞ࡢ➢ྕࡀ୍Ꮚࡍ
ࡿ࡜ࡁࡣࠊෆྥࡁ࡟➢ྕࡀ␗࡞ࡿ࡜ࡁࡣእྥࡁ࡟ຊࡀస⏝ࡍࡿࠋ77

ⅆᒣ⅊ࡢపࢥࢫࢺ㧗ᏳᐃCW-THz Ἴ࡟ࡼࡿศග
᱔ᓥྐḠ1, ᕝୖ⏤⣖2, ୰ᓥㄔ31) ⚟஭ᕤᴗ኱Ꮫ, 2) ⚟஭ᕤᴗ㧗➼ᑓ㛛Ꮫᰯ, 3)኱㜰኱Ꮫ
SUMMARY⮬↛⅏ᐖࡢከ࠸᪥ᮏ࡟࠾࠸࡚ࡣࠊ⿕⅏⪅ࡢ≧ἣࢆ㧗㏿࠿ࡘࠊṇ☜࡟▱ࡿࡇ࡜ࡣႚ⥭ࡢㄢ㢟࡛࠶ࡿࠋTHzἼࢆ⏝࠸ࡿࡇ࡜࡛ࠊ㧗㏿໬ࡀᮃࡵࡿࠋ᭱㐺࡞
㏱㐣≉ᛶࢆࡶࡘ࿘Ἴᩘᖏࢆㄪ࡭ࡿࡓࡵ࡟ࠊⅆᒣ⅊࡟ᑐࡍࡿSub-THzἼᖏࡢ㏱㐣≉ᛶࡢ ᐃ⣔ࢆᵓ⠏ࡋࡓࠋ௒ᅇࡣࠊࢧࣥࣉࣝࡢ୙ᆒ୍ᛶࡢᙳ㡪ࢆ㑊ࡅࡿࡓࡵ࡟ࠊ㞟ගࡏࡎ┤ᚄ㸰࢖ࣥࢳࡢᖹ⾮ࣅ࣮࣒ࡢTHzἼࢆ⏝࠸ࡓࠋᩘࢭࣥࢳࡢⅆᒣ⅊ࡢࢧࣥࣉࣝ࡟
ᑐࡋ࡚㏱㐣ࡢᐇ㦂ࡀ⾜࠼ࡓࠋ㏻ᖖࡢከ࣮ࣔࢻ༙ᑟ
యࣞࢨ࣮ࢆ⏝࠸ࡓሙྜࡣಙྕࡀᏳᐃࡏࡎศᩓࡶ኱
ࡁ࠿ࡗࡓࡀࠊ࣮ࣞࢨ࣮࢝࢜ࢫගࢆ⏝࠸ࡿࡇ࡜࡛ࠊ
෌⌧Ⰻࡃࠊ࡯࡜ࢇ࡝ศᩓࡢ↓࠸ᐇ㦂⤖ᯝࡀᚓࡽࢀ
ࡿࡼ࠺࡟࡞ࡗࡓࠋ௒ᚋࡼࡾᗈᖏᇦ໬ࢆ┠ᣦࡍࠋࡲࡓࠊᮏ◊✲࡛⏝࠸ࡓ༙ᑟయ࣮ࣞࢨ࣮ࡣࠊᩘⓒ෇ࡢ
ᕷ㈍ࡢࡶࡢ࡛࠶ࡾࠊእ㒊㙾࡟ࡼࡿᡠࡾගࢆຍ࠼ࡿ
FIG. 㸯࣮ࣞࢨ࣮࢝࢜ࢫ࡟ࡼࡿTHz-TDS ࡢࢧࣥࣉࣝ㒊ศࡇ࡜࡛࢝࢜ࢫⓎ᣺ࡉࡏ࡚࠸ࡿࠋప౯᱁࡞ศග⿦⨨ࡢᐇ⌧ࡀྍ⬟࡛࠶ࡿࠋᮏࢩࢫࢸ࣒ࢆ⏝࠸ࡿࡇ࡜࡛ࠊ
THzศගࡶ኱ࡁࡃᬑཬࡍࡿࡇ࡜ࡀᮇᚅࡉࢀࡿࠋ௒
ᚋࠊGeorgia Tech. ࡜ࡢඹྠ◊✲ࡶ⾜ࡗ࡚ࡺࡃࠋ
78㔞Ꮚࣅ࣮࣒※ࡢ㛤Ⓨࠊไᚚ࡞ࡽࡧ࡟ࡑࡢᛂ⏝࡟㛵ࡍࡿ◊✲⸨⏣㞞அ1,2 㸪ᮏ㉺ఙ஧1,2 㸪ᰁᕝᬛᘯ1,2 㸪㇂ཱྀㄔ἞1,2 㸪ࣁ࢖ࢡ࣭ࢥࢫࣟࣅ࢔ࣥ1,2 㸪಴ᶫៅ⌮1㸪ᯇ⏣ᫀᖹ1㸪ඤ⋢஢♸21) 㸦බ㈈㸧࣮ࣞࢨ࣮ᢏ⾡⥲ྜ◊✲ᡤ㸪2) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ
SUMMARY(a)᭶ࡢᶍᨃ◁㸦FJS-1㸧ࡸᆅୖࡢᅵ㉁ᮦᩱ㸦⌛◁8ྕࠊᱜᓥⅆᒣ⅊㸧ࢆ࣮ࣞࢨ࣮࡛ຍ⇕ࡋ3Dࣉࣜࣥ
ࢸ࢕ࣥࢢࡢᡭἲࢆ฼⏝ࡍࡿࡇ࡜࡛ࠊᩘcm⛬ᗘࡢ❧య≀ࢆస〇ࡋࠊᘓタᮦᩱࡸྛ✀㒊ᮦ࡜ࡋ࡚ࡢᛶ⬟ࢆホ౯ࡍࡿ◊✲ࢆ⾜ࡗࡓࠋ3Dࣉࣜࣥࢸ࢕ࣥࢢࡢᡭἲࡢ࠺ࡕࠊ⢊ᮎ⁐⼥⤖ྜ
(Powder Bed Fusion : PBF) ἲ࡜ᣦྥᛶ࢚ࢿࣝࢠ࣮ሁ
✚(Directed Energy Deposition : DED)ἲࢆ⏝࠸࡚❧య≀ࢆస〇ࡋࠊᅽ⦰ᙉᗘࡸኚᙧᛶ⬟ࢆホ౯ࡋࡓࠋPBFἲࡣ⢭ᐦ㐀ᙧ࡟㐺ࡋ࡚࠾ࡾࠊDEDἲࡣ኱ᆺ㐀ᙧ࡟㐺ࡋ࡚࠸ࡿࡇ࡜ࡀ☜ㄆ࡛ࡁࡓࠋ
DEDἲ࡛స〇ࡋࡓ❧య≀࡟࠾࠸࡚ᅽ⦰ᙉᗘ ࠥ 60 N/mm2
ࢆ㐩ᡂࡋࡓࠋࡇࢀࡣࠊࢭ࣓ࣥࢺࢥࣥࢡ࣮ࣜࢺࡢᙉ
ᗘ࡟༉ᩛࡍࡿࠋ
ᮏ◊✲ࡣJAXAࡢᨭ᥼ࡢୗࠊ኱ᯘ⤌࡜ࡢඹྠ◊✲࡛⾜ࡗࡓࠋ

FJS-1

20ʹ20ʹH10 mm
(c)

FJS-1

36 ʹ 36 ʹ H40 mm(b)‫࠯ܖ‬8ߺ

10ʹ10ʹH10 mm(d)࡫ౣ͹Ւࢃօ

25ʹ25ʹH18 mm

FIG. ྛ✀ᅵ㉁ᮦᩱࢆ⏝࠸࡚࣮ࣞࢨ࣮ຍ⇕3Dࣉࣜࣥࢱ࣮
࡛సᡂࡋࡓ㐀ᙧ≀ࠋᮦᩱ࡜ᡭἲࡣࠊ(a)᭶ࡢᶍᨃ◁࡜PBF
ἲࠊ(b) ⌛◁8ྕ࡜PBFἲࠊ(c)᭶ࡢᶍᨃ◁࡜DEDἲࠊ(d)ᱜ
ᓥࡢⅆᒣ⅊࡜DEDἲࠋ
79࣮ࣞࢨ࣮㐀ᙧἲ࡟ࡼࡿࢩࣜ࢝࢞ࣛࢫᵓ㐀ᙧᡂᮏ㉺ఙ஧1㸪ྜྷ⏣ᐇ2 㸪⸨ᒸຍዉ3㸪 ᆏᮏ㧗ಖ11) 㸦බ㈈㸧࣮ࣞࢨ࣮ᢏ⾡⥲ྜ◊✲ᡤ㸪2) ㏆␥኱Ꮫ⌮ᕤᏛ㒊㸪3) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ

SUMMARY

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ᨵၿᚋ
ᨵၿ๓

Ϊϧηන໚ͶߑଆΝ࣍ͯյ઄ޭָોࢢͺɼ༹ʓ͵Ԣ༽෾໼Ͳཤ༽͠Ηͱ͏Ζɽ͞͹න໚ߑଆͺ΢ϱϕϨϱφΏɼ‫ࡡݜ‬ʀঈ‫ڊ‬Յ޽Ͳ‫ܙ‬੔͠Ηͱ͏ΖͪΌɼͨ͹੠ౕɼࣙ༟ౕͶͺ‫ݸ‬ֆ͍͗Εޭָોࢢઅ‫ܯ‬Ν੏‫ͤݸ‬ΖགྷҾͳ͵ͮͱ͏Ζɽຌ‫Ͳڂݜ‬ͺɼεϨαʖϱ་Ͷࢷ֐ϪʖδʖޭΝ
লࣻͤΖ͞ͳͶΓΕඏࡋΪϧηߑଆ͹‫ܙ‬੔Ν໪దͶߨͮͱ͏Ζɽ
2023೧ౕͺ‫خ‬൚ΝεϨαϱΤΥύ͖Δ੶ӵΪϧηͶรߍ͢ɼεϨαʖϱ་͹ΪϧηԿΝࢾΊͪ͗ɼࢾྋ͖Δ͹ൕིࣻ͗୉෱Ͷ‫ݰ‬ঙͪͪ͢ΌɼϪʖδʖলࣻͶΓΖรԿ֮͗೟Ͳ͘͵͖ͮͪɽͨ͹ͪΌɼຜ޲‫ܯ‬͹ൕࣻ‫ౕک‬͹S/NΝրવ͢ɼ‫ܯ‬଎੠ౕ͹րવΝߨͮͪɽ

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FIG. ▼ⱥ࢞ࣛࢫᇶᯈୖࢩࣜࢥ࣮ࣥἜࡢศග཯ᑕᙉᗘ
S/Nᨵၿ࡟ࡼࡾィ ᙉᗘẚࡀ኱ࡁࡃ࡞ࡗࡓ
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6DPSOHSUMMARYḟୡ௦ࡢࣁ࢖ࣃ࣮࣮࣡ࣞࢨ࣮ࡢ㛤Ⓨ࣭㐠⏝ࡢࡓࡵࡢࣇ࢓ࣛࢹ࣮ᅇ㌿Ꮚࡢ㛤Ⓨࢆ⾜ࡗ࡚࠸ࡿࠋ኱ཱྀ
ᚄ໬ࡀᐜ࡛᫆ࠊపᦆኻᮦᩱ࡛࠶ࡿ7Eῧຍ࢞ࣛࢫ࡟
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83



Improvement on characteristics of Pr3+-doped glass scintillator for neutron detector
Takahiro Murata
Faculty of Advanced Science and Technology, Kumamoto University , JapanSUMMARY
The aim of this collaborative research is to develop a
glass scintillator material for high performance neutron
beam measurements that combines fast response andhigh light output.
The PLE spectra of Pr3+ in SiO2-based type (a) andtype (b) glasses shifted to a longer wavelengthcompared with that in APLF80 glass. The PL spectral
intensity of Pr3+ in SiO2-based type (a) and type (b)glasses increased at shorter wavelengths than at longer
wavelengths, and the profile changed to a broad bandwith a shoulder. In the type (a) glass sample, the peaksof both PL and PLE were shifted to the higher energyside, and the FWHM was wider than in the type (b)glass sample. We plan to measure the fluorescence
lifetime of Pr3+ in SiO2-based glasses and evaluate theirscintillation properties.
The high-performance neutron glass scintillator to be
developed in this collaborative research will be afundamental technology that will support a safe andsecure society.

FIG. PL and PLE spectra of Pr3+ in SiO2-based glasses of type(a) and type (b) compared to (c) APLF80 glass: excited at (a)245 nm, (b) 242 nm, and (c) 227 nm; monitored at (a) 294 nm,(b) 280 nm, and (c) 273 nm.
84

Investigating cross luminescence in wide band gap barium fluoride crystals
M. Cadatal-Raduban1,2, L.V. Mui2, T. Shimizu2, N. Sarukura2 and K. Yamanoi2
1) Massey University, New Zealand, 2) Institute of Laser Engineering, Osaka University, JapanSUMMARY
This proposed project investigated crossluminescence (CL) from doped barium fluoride (BaF2)
crystals as a fast response scintillator. BaF2 has a fast
luminescence emission at 220nm and decay time ofabout 600ps due to CL, which is 1/1000 that of the slow
component called self-trapped exciton emission (STE).
The STE at 350nm with a decay time of 620ns and fivetimes higher light yield co-exists alongside this fast CL
emission. The presence of this dominant slow STE
luminescence causes pileup that limits the response time.
Eliminating it requires filtering that complicates theexperimental setup and therefore limits the use of BaF2
as a fast-response scintillator. This project aimed toinvestigate the effect of doping on the suppression of
the slow STE emission, resulting to enhanced
applications of BaF2 as a fast-response scintillator
without the need to filter out its slow emission
component. BaF2 was doped with Yttrium (Y) ions.
Figure 1 shows the emission from a Y-doped BaF2 with
reduced STE when excited by Ȝ = 50nm and 56nm.

FIG. Luminescence emission from BaF2 and Y-doped BaF2
obtained by excitation with Ȝ = 50nm and 56nm vacuum UV.
The slow STE emission is slightly reduced, providing excitingprospects for Y-doped BaF2 as a fast-response scintillator.
85㉥እ⥺࣐࢖ࢡࣟࢫࢥ࣮ࣉࢆ⏝࠸ࡓᩥ໬㈈ㄪᰝࡢ᭷ຠᛶ࡟㛵ࡍࡿ◊✲⏣ᮧ᭸⨾1,ΎỈಇᙪ2,୰⏣ឡ஀1,3
1) ዉⰋᩥ໬㈈◊✲ᡤ, 2) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ , 3)኱㜰኱ᏛேᩥᏛ◊✲⛉SUMMARYᮏ◊✲࡛ࡣᩥ໬㈈ㄪᰝ࡟࠾ࡅࡿ㉥እ⥺㢧࣐࢖ࢡࣟࢫࢥ࣮ࣉ࡟ࡼࡿほᐹࡢ᭷ຠᛶ࡟ࡘ࠸᳨࡚ウࢆ⾜ࡗࡓࠋᙬⰍᩥ໬㈈ࡢ⾲㠃≧ែࢆ෌⌧ࡋࡓᶍᨃ㈨ᩱࢆస
ᡂࡋ࡚ほᐹࢆ⾜ࡗࡓ⤖ᯝࠊ⢏ᗘࡢ⢒࠸⩌㟷࡜⍠⍵࡟࠾࠸࡚ࡣࡑࡢ෗ࡾ᪉࡟᫂░࡞ᕪࡀࡳࡽࢀࡿࡇ࡜ࢆほᐹࡋࡓࠋ᪤Ꮡࡢㄪᰝᡭἲ࡛ࡣྠᐃࡀᅔ㞴࡛࠶ࡗࡓ⾲ᒙ࡟ࢃࡎ࠿࡟Ꮡᅾࡍࡿ⢏Ꮚ࡟࠾࠸࡚ࡶࠊ
㢦ᩱࡢ㆑ู࡟᭷ຠ࡞᝟ሗࢆᚓࡽࢀࡿࡇ࡜ࢆ☜ㄆࡋ
ࡓࠋᩥ໬㈈ࢆ㠀◚ቯ࠿ࡘ㠀᥋ゐ࡟࡚ศᯒࡍࡿᡭἲ
ࡢ୍ࡘ࡜ࡋ࡚ࠊ㉥እ⥺࣐࢖ࢡࣟࢫࢥ࣮ࣉࡀ᭷ຠ࡛
࠶ࡿ࡜࠸࠼ࡿࠋ
୍᪉࡛ࠊ⢏ᗘࡢᑠࡉ࠸㢦ᩱ࡟࠾࠸࡚ࡣࡑࡢ㆑ู
ࡀᅔ㞴࡛࠶ࡗࡓࠋࡇࡢࡼ࠺࡞ᑐ㇟࡟ࡘ࠸࡚ࡣ᪂ࡓ
࡞ᡭἲ࡟᳨࡚ウࡢవᆅࡀ࠶ࡿ࡜⪃࠼ࡽࢀࡿࠋ
FIG.⢏ᗘࡢ⢒࠸㢦ᩱ࡟࠾ࡅࡿ㢧ᚤ㙾ᣑ኱෗┿㸦92ಸ㸧

86

Electronic properties of Co and Ni co-doping on ZnO: A Density Functional Theory Study
Christian Loer Llemit1,2, Efraem Larenio2, Keito Shinohara3, Melvin John Empizo3, Kohei Yamanoi3, Nobuhiko Sarukura3,
Roland Sarmago1 and Alexandra Santos-Putungan2
1 National Institute of Physics, University of the Philippines Diliman, Philippines
2 Institute of Mathematical Sciences and Physics, University of the Philippines Los Ban˾os, Philippines
3 Institute of Laser Engineering, Osaka University, JapanSUMMARY
In this work, we investigated the role of cobalt andnickel doping on the electronic properties of wurtzite
ZnO using first principles calculations. We consider
single doping and double doping where one and two Zn
atoms are replaced. For the double doping, the Co-Co,
Ni-Ni, and Co-Ni co-doping configurations were
explored at different separation distance and magnetic
configuration. Through total energy calculations, thetwo dopants prefer to be near with each other. It was
found out that Co-Co doping assumes a stableferromagnetic order while Ni-Ni and Co-Ni doping
assumes an antiferromagnetic order. These findings areof great importance in designing next-generation
spintronic devices.
FIG. Band Structure for double-doped ZnO: (a) Co-Co doped,(b) Ni-Ni doped, and (c) Co-Ni doped Zno. Orange (blue) for
spin up (down) bands.
87ḟୡ௦㧗ᶵ⬟ගࣇ࢓࢖ࣂࢹࣂ࢖ࢫࡢ㛤Ⓨ࡜ࡑࡢᛂ⏝⸨ᮏ 㟹༓ⴥᕤᴗ኱Ꮫ

SUMMARY(a)

Yellow laser systems have been studied extensively formany applications such as acne treatment and scientificresearch. We present here a demonstration of a yellow
fiber laser using a single-mode double-clad structured
Dy3+-doped waterproof fluoro-aluminate glass fiber(Dy3+:SM-DC-WPFGF). The experimental setup of
Dy3+:SM-DC-WPFGF yellow laser is shown in Fig. 1(a).
Figure 1(b) shows the input/output characteristics which
depends on transmittance of output coupler. The output
coupler with the highest power and efficiency was C, witha maximum output power of 169.2 mW and a slope
efficiency of 33.6%. In summary, yellow laser power over
100 mW was obtained using a single-mode, double-clad
Dy3+:SM-DC-WPFGF. For the future, the power will be
increased by polarization coupling or fiber power
combining technology.

(b)

Yellow(575 nm) laser power [mW]200
A:10.2%
P =20.2 mW, ͱs=14.3%
th

B:22.2%
P =86.2 mW, ͱs=31.2%
th150

C:26.6%
P =91.4 mW, ͱs=33.6%
thD:51.8%
P =140.2 mW, ͱs=25.6%
th

100

50

0

100

200

300

400

500

600

Absorbed power [mW]

Fig.1 (a)Experimental setup of Dy3+ :SM-DC-WPFGF yellow
laser. (b)Input/output characteristics which depends ontransmittance of output coupler.

88⣸እᨺᑕ࡟ࡼࡿගᏛ⣲Ꮚࡢຎ໬≉ᛶホ౯ᒾబ♸ᕼ1, ᒣࣀ஭⯟ᖹ21) ⏘ᴗᢏ⾡⥲ྜ◊✲ᡤ 2) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ

SUMMARY଎ఈഀௗʁ220 nm

ᚑ᮶ࠊ ග࣭ᨺᑕᶆ‽ࡢᶆ‽್ࢆ⥔ᣢࡋ࡚ࡁࡓⓑ⇕㟁⌫ࡀධᡭᅔ㞴࡟࡞ࡗ࡚࠸ࡿࡇ࡜࠿ࡽࠊ᳨ฟ
ჾࢆ⏝࠸ࡓᶆ‽್ࡢ⥔ᣢࡀồࡵࡽࢀ࡚࠸ࡿࠋࡇࡢ
ࡓࡵࠊ᳨ฟჾࢆᵓᡂࡍࡿගᏛ⣲Ꮚࡢຎ໬≉ᛶ࡬ࡢ⌮ゎࡀᚲせ࡛࠶ࡿࠋᮏ◊✲࡛ࡣࠊࢸࣇࣟࣥ〇ⓑⰍᣑᩓᯈ࡟ᵝࠎ࡞Ἴ㛗ࢆ↷ᑕࡍࡿࡇ࡜࡛ࠊᣑᩓ཯ᑕ
⋡ࡢኚ໬ࢆㄪ࡭ࡓࠋࡑࡢ⤖ᯝࠊ⣸እ↷ᑕ࡟ࡼࡾ⣸እᇦࡢ཯ᑕ⋡ࡀຎ໬ࡍࡿഴྥࡀࡳࡽࢀࡓ୍᪉࡛ࠊ
୍㒊Ἴ㛗࡛ࡣࠊ㏫࡟཯ᑕ⋡ࡀᅇ᚟ࡍࡿഴྥࡀࡳࡽ
ࢀࡓࠋࡇࡢࡼ࠺࡞Ἴ㛗౫Ꮡᛶࡣࠊ ᐃ⿦⨨ࡢຎ໬ᗘࡢ⟶⌮ࡔࡅ࡛࡞ࡃࠊຎ໬ᶵᵓࡢゎ᫂࡟ࡶࡘ࡞ࡀ
ࡿࡇ࡜ࡀᮇᚅ࡛ࡁࡿࠋ

FIG. ྛἼ㛗ࡢ⣸እᨺᑕࢆ↷ᑕࡋࡓ㝿ࡢࢸࣇࣟࣥ〇ⓑⰍᣑᩓᯈࡢ220 nm࡛ࡢ཯ᑕ⋡ኚ໬

89࣍࢘㓟⣔ගᏛ⤖ᬗࡢ㧗ရ㉁໬
᳃ຬ௓1㸪ྜྷᮧᨻᚿ21) ኱㜰኱Ꮫ኱Ꮫ㝔ᕤᏛ◊✲⛉㸪2) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ

SUMMARYⴭ⪅ࡽࡀ㛤Ⓨࡋࡓ㧗ရ㉁࡞኱ᆺ㠀⥺ᙧගᏛ⤖ᬗ
CsLiB6O10 㸦CLBO㸧࢖ࣥࢦࢵࢺ࠿ࡽἼ㛗ኚ᥮⣲Ꮚࢆస〇ࡋࠊࡇࢀࡲ࡛࡟ሗ࿌ࡉࢀ࡚࠸ࡿ῝⣸እග㸦Ἴ㛗266 nm㸧࡛ࡣ᭱㧗ฟຊ࡜࡞ࡿᖹᆒฟຊ53W
ࡢⓎ⏕࡟ᡂຌࡋࡓ[1]ࠋᐇ㦂࡟ࡣᖹᆒฟຊ261Wࠊ
ࣃࣝࢫ⧞ࡾ㏉ࡋ࿘Ἴᩘ1MHzࠊࣃࣝࢫᖜ14psࡢᇶᮏἼග※ࢆ⏝࠸ࠊLBO⤖ᬗ࡟ࡼࡾἼ㛗532nmࡢ⥳ⰍගࢆⓎ⏕ࡉࡏࠊࡉࡽ࡟CLBO࡟ධᑕࡋ࡚῝⣸እග࡬ࡢኚ᥮ࢆ⾜ࡗࡓࠋᮏ◊✲ࡣ༙ᑟయᚋᕤ⛬ࡢᚤ⣽ຍᕤᛂ⏝࡬ࡢᐇ⿦ࢆຍ㏿ࡍࡿᡂᯝ࡜࡞ࡿࠋ
[1] Y. Orii et al., Opt. Express 31, 14705 (2023).
㸦Editors' Pickㄽᩥ࡟㑅ฟ㸧

&/%2⤖ᬗࢆ⏝࠸ࡓἼ㛗QP⥳Ⰽගධຊ࡟ᑐࡍࡿἼ㛗
QP῝⣸እගኚ᥮≉ᛶࠋᤄධࡋࡓࣅ࣮࣒ࣉࣟࣇ࢓࢖ࣝ
ࡣࠊQPගฟຊ :࡜:Ⓨ⏕᫬ࡢࡶࡢࠋ
90㧗ᙉᗘ࣮ࣞࢨ࣮ࢆ⏝࠸ࡓ㧗ᶵ⬟ᛶ᭷ᶵ⤖ᬗ๰〇ἲࡢ㛤Ⓨྜྷᕝὒྐ11) ኱㜰኱ᏛᕤᏛ◊✲⛉SUMMARYᮏ◊✲ࡢ┠ⓗࡣࠊ㧗ᙉᗘ࣮ࣞࢨ࣮࡟ࡼࡿ⤖ᬗ໬ไᚚἲࢆ⏝࠸࡚ࠊ㧗ᶵ⬟ࢆ᭷ࡍࡿ⤖ᬗࢆ๰〇ࡍࡿࡇ࡜࡟࠶ࡿࠋᮏᖺᗘࡣࠊ≉࡟㉸▷ࣃࣝࢫ࣮ࣞࢨ࣮
ࢆ⏝࠸ࡓ⤖ᬗ᰾Ⓨ⏕ࠊ⤖ᬗᵓ㐀┦㌿⛣ࠊ✀⤖ᬗᙧᡂࡢไᚚ࡟㛵ࡍࡿ◊✲࡟ྲྀࡾ⤌ࡳࠊࡑࢀࡒࢀ࡛ᰝ
ㄞ௜ࡁᅜ㝿ㄽᩥㄅ࡟ཎⴭㄽᩥࢆⓎ⾲ࡋࡓࠋ౛࠼ࡤࠊ
⤖ᬗ᰾Ⓨ⏕࡟ࡘ࠸࡚ࡣࠊ⼥ᾮ⣔࡛࠶ࡿịࡢ⤖ᬗ໬ࢆ࣮ࣞࢨ࣮࡟ࡼࡾ᫬✵㛫ไᚚࡍࡿࡇ࡜࡟ᡂຌࡋࠊ
ࡑࡢ⤖ᬗ໬ࢲ࢖ࢼ࣑ࢡࢫࢆ࣐࢖ࢡࣟ⛊࣭࣐࢖ࢡࣟ
࣓࣮ࢺࣝࡢࢫࢣ࣮࡛ࣝゎ࡛᫂ࡁࡿࡇ࡜ࢆ♧ࡋࡓ㸦ྑᅗ㸸J Phys Chem Lett, vol 14, pp 4394-4402,
2023㸧ࠋࡲࡓ࣮ࣞࢨ࣮࢔ࣈ࣮ࣞࢩࣙࣥ࡟ࡼࡾࠊ࢔
࣑ࣀ㓟⤖ᬗࡢtከᙧ┦㌿⛣ࡢ᫬✵㛫ไᚚࡸ㸦J Phys
Chem Lett, vol 15, pp 180-186, 2024㸧ࠊ᭷ᶵ㠀⥺ᙧගᏛ⤖ᬗࡢ༢⤖ᬗᛶࡢ✀⤖ᬗస〇㸦J Phys Chem C,
FIG. (a)㉸▷ࣃࣝࢫ࣮ࣞࢨ࣮࡟ࡼࡿịࡢ⤖ᬗ໬ࡢᵝᏊvol 127, pp 14005-14012, 2023㸧࡞࡝ࡢᡭἲㄽࢆ㛤(b) ịࡢ⤖ᬗ᰾Ⓨ⏕☜⋡ࡢ࣮ࣞࢨ࣮࢚ࢿࣝࢠ࣮࠾ࡼࡧࣃ
Ⓨࡋࡓࠋࣝࢫ᫬㛫ᖜ౫Ꮡᛶ H. Takahashi, Y. Hosokawa, H. Y.
Yoshikawa et al., J Phys Chem Lett, vol 14, pp 4394-4402,
2023࠿ࡽチྍࢆᚓ࡚㌿㍕91┿✵⣸እ㡿ᇦ࡟࠾ࡅࡿගᏛᮦᩱࡢᒅᢡ⋡ᐃᱵᮧ ಙᘯ1㸪ྜྷᮧ ᨻᚿ21) බ❧༓ṓ⛉Ꮫᢏ⾡኱Ꮫ㸪2) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ
SUMMARYᮏ◊✲ࡣࠊḟୡ௦༙ᑟయ〇㐀⿦⨨࡟⏝࠸ࡽࢀࡿගᏛᮦᩱࡢ┿✵⣸እ⥺Ἴ㛗㡿ᇦ࡟࠾ࡅࡿᒅᢡ⋡ࢆᐃࡍࡿࡶࡢ࡛࠶ࡿࠋ
௒ᖺᗘࡣࠊἼ㛗1064.2 nmࡢNd:YAG࣮ࣞࢨ࣮ࡢ
ᇶᮏἼཬࡧ➨㸳㧗ㄪἼࡲ࡛ࡢᒅᢡ⋡ࢆ ᐃࡍࡿ࡜࡜ࡶ࡟ࠊ➨㸳㧗ㄪἼ࡜Nd:YAG࣮ࣞࢨ࣮ᇶᮏἼບ
㉳KTPගࣃ࣓ࣛࢺࣜࢵࢡⓎ᣺ჾ࡟ࡼࡿ2124.2 nm ㉥እ࣮ࣞࢨ࣮ග࡜ࡢග࿴࿘ἼⓎ⏕࡟ࡼࡾࠊArF࢚࢟
ࢩ࣐࣮ࣞࢨ࣮ࡢⓎ᣺Ἴ㛗࡛࠶ࡿࠊ193.4 nmࡢ┿✵⣸እ࣮ࣞࢨ࣮ගࢆⓎ⏕ࡉࡏࡓࠋḟ࡟ࠊࡑࡢ┿✵⣸እ࣮ࣞࢨ࣮ගࢆ⏝࠸࡚SBO⤖ᬗࡢࣉࣜࢬ࣒࡟ධᑕ
ࡋࠊࡑࡢᒅᢡゅ į ࡼࡾᒅᢡ⋡ࡢ ᐃࡋࡓࠋᒅᢡ⋡ࡀ1105ࡲ࡛᪤▱ࡢ▼ⱥࣉࣜࢬ࣒ࢆ⏝࠸
࡚ྠᵝࡢᐇ㦂ࢆ⾜࠸ࠊ⣸እ⥺Ἴ㛗㡿ᇦ࡛ࡢ ᐃ⢭ᗘࢆ᳨ドࡋࡓ࡜ࡇࢁࠊ 2104ࡢ⢭ᗘ୍࡛⮴ࡋࡓࠋࡇࢀࡽࡢᇶᮏࢹ࣮ࢱࡣࠊ┿✵⣸እ⥺⏝ࡢගᏛᮦᩱࡢホ౯࡟㈨ࡍࡿࡇ࡜ࡀ࡛ࡁࡿࠋࡲࡓࠊࡼࡾ▷Ἴ㛗ࡢ┿✵⣸እ⥺࣮ࣞࢨ࣮ග࡟ࡼࡿࢹ࣮ࢱྲྀᚓࢆ⾜࠺ࡇ࡜࡛ࠊᮍ▱ࡢἼ㛗㡿ᇦ࡟࠾ࡅࡿᒅᢡ⋡ࡢ್ࡀᐃྍ⬟࡜࡞ࡿࠋ

(a)nsin(D  G )sin D

D: Apex angle

D

Ϯʘ

Gs
Gf

ϱʘ

(c)

nf
ns

VUVޭ

(b)
FIG. 1 (a) ࣉࣜࢬ࣒ศᩓἲ࡟ࡼࡿ ᐃࡢཎ⌮(b) ᐇ㦂ࡢᴫせ(c) ┿✵⣸እ࣮ࣞࢨ࣮ගⓎ⏕ࡢᵝᏊ92

Development on the optical image transfer by using a
multimode fiber
Tomoya. Nakamura1, Yasubnou. Arikawa2,
1) SANKEN Osaka university, Japan, 2) Institute of laser engineering Osaka university, JAPANSUMMARY࣮ࣞࢨ࣮᰾⼥ྜ◊✲࡟࠾࠸࡚ࠊ࣮ࣞࢨ࣮↷ᑕࢱ࣮ࢤࢵࢺ
ࢳࣕࣥࣂ࣮࠿ࡽ30m㐲᪉࡟タ⨨ࡉࢀࡓ࣮ࣞࢨ࣮⿦⨨࠿ࡽࠊ࣮ࣞࢨ࣮↷ᑕࢱ࣮ࢤࢵࢺࡢᩘmm㏆ഐ࡟ྥ࠿ࡗ࡚ࠊගࣇ࢓
࢖ࣂ࣮ࢆ㏻ࡋ࡚࣮ࣞࢨ࣮ࢆ↷ᑕࡋ࡚ࠊ᰾⼥ྜ୰ᛶᏊࢆEO
࣏࣐࣮ࣜࢆ㏻ࡋ࡚࣮ࣞࢨ࣮ࣉ࣮ࣟࣈィ ࡍࡿ⿦⨨ࡀ㛤Ⓨࡉࢀ࡚࠸ࡿࠋࡇࢀࡲ࡛ࡣ᰾⼥ྜ୰ᛶᏊࡢⓎ⏕ᩘ᫬㛫ኚ໬ࢆィࡍࡿ┠ⓗ࡛࠶ࡗࡓࡀࠊࡉࡽ࡟᰾⼥ྜࣉࣛࢬ࣐ᙧ≧ࡢ✵㛫ศゎ⏬ീィ ࢆ┠ⓗ࡜ࡋ࡚ࠊ㸯ᮏࡢ࣐ࣝࢳ࣮ࣔࢻࣇ࢓࢖
ࣂ࣮ࢆ㏻ࡋ࡚⏬ീಙྕࢆఏ㏦ࡋࠊ1μm⣭ࡢ㉸㧗✵㛫ศゎࢆᐇ⌧ࡍࡿࠋ᰾⼥ྜ୰ᛶᏊࡢᙉᗘࢆEO࣏࣐ࣜ࡟ࡼࡾ࣮ࣞ
ࢨ࣮ගࣃࣝࢫࡢᙉᗘኚㄪ࡟ኚ᥮ࡋ࡚ࣇ࢓࢖ࣂ࣮࡟஌ࡏ࡚ఏ
ᦙࡉࡏࡿࠋ࣐ࣝࢳ࣮ࣔࢻࣇ࢓࢖ࣂ࣮ࢆఏ᧛ࡍࡿ࣮ࣞࢨ࣮ග
ࡢ࣮ࣔࢻ㸦ᙉᗘศᕸࣃࢱࣥ࡜ග఩┦㸧ࢆ࠶ࡽ࠿ࡌࡵィ ࡋ࡚࠾࠸࡚ࠊᩘ್㓄ิ࡟ኚ᥮ࡋ࡚࣐ࢺࣜࢡࢫ࡟ࡋ࡚ಖᏑࡋ࡚
࠾࠸࡚ࠊ᰾⼥ྜࢩࣙࢵࢺ᫬࡟ࣇ࢓࢖ࣂ࣮ࢆ㏻ࡋ࡚ᚓࡽࢀࡓ
ගಙྕ࠿ࡽ᰾⼥ྜࣉࣛࢬ࣐ࡢᙧ≧ࡢ⏬ീࢆ෌⏕ࡍࡿࠋ࣮ࣞ
ࢨ࣮⛉Ꮫ◊✲ᡤࡢᐇ㦂ᐊࡢࢫ࣮࣌ࢫࢆ೉ࡾ࡚ཎ⌮ᐇド⏝ࡢ⿦⨨ࢆᵓ⠏ࡋࡓࠋࣇ࢓࢖ࣂ࣮࣮ࣞࢨ࣮ࢆග※࡜ࡋ࡚ࠊ࣐ࣝ
ࢳ࣮ࣔࢻࣇ࢓࢖ࣂ࣮࡟ࡼࡿග⏬ീఏ㏦ࡢཎ⌮ᐇドᐇ㦂ࢆ⾜ࡗࡓࠋከᩘࡢ᮲௳࡛ከࡃࡢࢹ࣮ࢱࡀྲྀᚓࡉࢀ࡚࠸ࡿࡀࠊ
ࡲࡔ┠ᶆ࡜ࡍࡿ⏬ീ෌⏕࡟ࡣ⮳ࡗ࡚࠸࡞࠸ࠋḟᖺᗘࡶᘬࡁ
⥆ࡁ◊✲ࢆ⥅⥆ࡍࡿࠋࣰ‫ݩ‬ιρφࣺਇɼϪʖδʖՌָ‫ॶڂݜ‬Ͷͱɽӊଈ͖Δԭ৯͏ϓΟ΢ώʖͶΓΕޭ͗೘ࣻ͢ͱ͕Εɼ2෾‫ͱ͢ز‬1ຌͺ஦ԟ৏෨ΓΕΠέοϣΦʖνʖ෉͘ϪϱθΝ௪͢ͱϜϩοϠʖχϓΟ΢ώʖ͹೘Ε޳Ͷ͖Δ೘ࣻɽ఼ޭ‫ͱ͢ͳݱ‬ϜϩοϠʖχϓΟ΢ώʖͶ೘ࣻ͢ɼϓΟ΢ώʖड़޳͖ΔΩϟϧͶ೘ࣻ
͢ͱ͏Ζɽ΍͑1ຌͺΩϟϧͶ௜ં೘ࣻ͢ͱ͏Ζɽ2ͯ͹ޭ͗Ωϟϧ৏Ͳ‫ױ‬মͤΖ͞ͳͲɼ‫ױ‬মϏνϱͶ॑ৠͪ͢ϜϩοϠʖχϓΟ΢ώʖϏνϱ͗ࡳӪ͠Ηɼ͖͞͞Δ‫ౕک‬෾ාϏνϱͳҒ૮Ν‫ܯ‬଎ͤΖɽ఼ޭ‫͖ݱ‬Δ͹ժ଀͹̏ྭ͗ӊ৏Ͳ͍Ζɽಋ༹Ͷɼ఼ޭ‫ݱ‬ΝϓΟ΢ώʖ͹೘Ε޳໚৏Ͳ1μm͕͘Ͷ100x100=1ຬ఼ɼҒ஖Νร͓͵͗ΔࡳӪ͢ͱαϱϒϣʖνʖͶ‫ى‬Գͦ͠Ζɽͨ͹‫ޛ‬Ͷɼ఼ޭ‫ݱ‬ΝϓΟ΢ώʖͶ೘Ηͪ࣎͹৶ߺժ଀͖ΔԾ͹৶ߺΝ࠸ਫ਼ͪ͢ժ଀͗ӊࢶtͲ͍Εɼ఼ޭ‫ݱ‬Δ͘͢΍͹͗؏଎͠Ηͱ
͏Ζɽ

93

Development of Transparent Ceramics for Optical Materials with High-Effective-Atomic Numbers andTheir Energy Transfer㯮⃝ಇ௓1,2, ᒣ㊰᫭ᗈ1, ⸨ཎຍዉ21) ᮾ໭኱Ꮫ㸪2) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ
SUMMARY
Hfྵ᭷㓟໬≀ࡣ㧗࠸᭷ຠཎᏊ␒ྕࢆᣢࡘࡓࡵ࡟ࠊ
࣐࢞ࣥ⥺᳨ฟຠ⋡ࡢⅬ࠿ࡽ㠀ᖖ࡟᭷ᮃ࡞ࢩࣥࢳ
࣮ࣞࢱᮦᩱ࡛࠶ࡿࠋ≉࡟ࠊCeῧຍSrHfO3ࡣࡇࢀࡲ࡛࡟ᨺ㟁↝⤖ࣉࣛࢬ࣐ἲ㸦SPSἲ㸧࡞࡝ࡢ᥈⣴࡛ࠊHf㓟໬≀ࡢ୰࡛Ⓨගຠ⋡ࡀ㧗࠸Ce3+ ࡢ5d-4f㑄⛣㸦チᐜ㑄⛣㸧⏤᮶ࡢⓎගࡀぢ࠼࡚࠸ࡓࠊ୍᪉࡛ࠊ
ྜᡂရࡣ୙㏱᫂య࡛ࠊ࣐࢞ࣥ⥺↷ᑕ࡟ࡼࡿἼ㧗್ࢫ࣌ࢡࢺࣝୖ࡛ࠊග㟁྾཰ࣆ࣮ࢡࡀぢ࠼࡞࠿ࡗࡓࠋ
௒ᖺᗘࡣྜᡂࡋࡓCeῧຍSrHfO3ࡢගᏛ≉ᛶࠊ≉
࡟70K⛬ᗘࡢప ࠿ࡽ㧗 ࡲ࡛ࡢⓎග㔞ࡸⓎගἼ㛗࡟ࡘ࠸࡚ࡢ ᗘ౫Ꮡᛶ࡟㛵ࡍࡿㄪᰝ࡞࡝ࢆࠊ⮬↛⛉Ꮫ◊✲ᶵᵓ ศᏊ⛉Ꮫ◊✲ᡤࡢᴟ➃⣸እග◊✲᪋タ࡜࠸ࡗࡓᨺᑕග᪋タࡸᮾ໭኱Ꮫ࡛ᐇ᪋ࡋࡓࠋ
ࡑࡢ⤖ᯝࠊᙜヱᮦᩱࡢ⺯ගᑑ࿨ࡀ20 ns⛬ᗘ࡜㠀ᖖ࡟㧗㏿࡛࠶ࡗࡓࠋࡇࢀࡽࡢ⤖ᯝࡣ⌧ᅾ᰾་Ꮫ㸦ࡀࢇデ᩿㸧➼࡛ࡢ฼⏝ࡉࢀ࡚࠸ࡿᮦᩱࡢ⺯ගᑑ
FIG.
࿨ࡀ50 ns⛬ᗘ࡛࠶ࡿࡇ࡜࠿ࡽࠊ᪩ᮇࡀࢇࡢⓎぢࡀࡋࡸࡍࡃ࡞ࡿ࡞࡝ࠊ᰾་Ꮫ࡞࡝ࡢศ㔝࡬ࡢᛂ⏝࡟ࡘ࡞ࡀࡿ⤖ᯝ࡛࠶ࡾࠊ௒ᚋࡢ◊✲࡟ྥࡅ࡚⯆࿡῝࠸ᮦᩱ࡛࠶ࡿࡇ࡜ࡀศ࠿ࡗࡓࠋ
94

CeῧຍSrHfO3ࡢホ౯᫬ࡢᵝᏊ     



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Tt `j ©X CO ©nm 9 ©¨z |6 @02 2cH}a©N£NQ02 2~Q}a

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

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 ("' ob¦ VeAh¥!+%/ ("' op)'(%$(%\M :p¤s     

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㧗࿘ἼᙎᛶἼࣇ࢕ࣝࢱ⏝ᅽ㟁༢⤖ᬗࡢḞ㝗ホ౯኱ᶫ 㞝஧1,⊷಴ ಙᙪ21) ᮾ໭኱Ꮫᮍ᮶⛉Ꮫᢏ⾡ඹྠ◊✲ࢭࣥࢱ࣮, 2) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ
SUMMARYḟୡ௦㏻ಙ(6G)࡟࠾ࡅࡿ㧗㏿኱ᐜ㔞ప㐜ᘏ㏻ಙࡢᐇ⌧࡟୙ྍḞ࡞SHFᖏ㧗࿘ἼᙎᛶἼࣇ࢕ࣝࢱࡢ
ࡓࡵࡢ␗✀ᅽ㟁༢⤖ᬗ᥋ྜᇶᯈᵓ㐀ࡀᥦ᱌ࡉࢀ࡚
࠸ࡿࠋࡇࡢᐇ⌧࡟ྥࡅ࡚᥋ྜᇶᯈ࡜࡞ࡿ༢⤖ᬗᮦᩱෆࡢ྾཰ῶ⾶ࡢపῶࡀ㔜せㄢ㢟ࡢ୍ࡘ࡛࠶ࡿࠋ
ᮏ◊✲࡛ࡣࠊᅽ㟁༢⤖ᬗ࡜ࡋ࡚⏝࠸ࡽࢀ࡚࠸ࡿ
LiNbO3(LN) ࡜MgOࢻ࣮ࣉLiNbO3(MgLN)ࢆྲྀࡾୖ
ࡆࠊගᏛ≉ᛶ࡜ᙎᛶἼఏᦙ≉ᛶ(㏿ᗘࠊῶ⾶)ࡢホ౯ࢆ⾜ࡗࡓࠋ
ගᏛ≉ᛶ࡜ࡋ࡚㏱㐣⋡ࠊ྾཰ಀᩘࡢ ᐃࢆ⾜ࡗࡓࠋ320 nm㏆ഐࡢ྾཰ಀᩘࡢ❧ࡕୖࡀࡾࡀࠊMg
ࢻ࣮ࣉࡢLNࡢ᪉ࡀ▷Ἴ㛗ഃ࡬ࢩࣇࢺࡋࡓࠋ୍᪉ࠊ
ᙎᛶἼ≉ᛶ࡜ࡋ࡚⦪Ἴఏᦙ≉ᛶࢆ ᐃࡋࡓࠋ⦪Ἴ
㏿ᗘࡣMgࡀࢻ࣮ࣉࡉࢀࡿࡇ࡜࡛⣙112 m/sୖ᪼ࡋࠊఏᦙῶ⾶ࡣࢃࡎ࠿࡟పῶࡍࡿࡇ࡜ࡀࢃ࠿ࡗࡓࠋࢥ
ࣥࢢ࢚ࣝࣥࢺ⤌ᡂࡢLN༢⤖ᬗࡣ㓟⣲Ḟ㝗➼ࡢḞ㝗ࡀ࠶ࡿࡢ࡟ᑐࡋࠊMgࢻ࣮ࣉ࡟ࡼࡾࡑࢀࡽࡢḞ㝗ࢆపῶࡍࡿຠᯝࢆ♧၀ࡍࡿ⤖ᯝ࡜⪃࠼ࡽࢀࡿࠋ
96

(a)

(b)

(c)

(d)

FIG. Optical properties and elastic wave propagation
properties for LN and Mg:LN samples.
(a) Transmittance, (b) Optical absorption coefficient,(c) Longitudinal wave velocity, (d) Longitudinal wave
attenuation coefficient.

97㠀⥺ᙧ QED ࡟࠾ࡅࡿ㔞Ꮚሙ࠿ࡽ⢏Ꮚศᕸ㛵ᩘࢆᵓᡂࡍࡿᡭἲࡢ᳨ウ℩ᡞ្኱1, ᑠⳢ῟1, 㛗཭ⱥኵ21) ᪥ᮏཎᏊຊ◊✲㛤Ⓨᶵᵓ㸪ᩔ㈡⥲ྜ◊✲㛤Ⓨࢭࣥࢱ࣮,2) ኱㜰኱Ꮫ㸪࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ.
SUMMARY㧗ᙉᗘ࣮ࣞࢨ࣮㟁☢ሙ࡟ࡼࡿ㠀⥺ᙧ㔞Ꮚ㟁☢ຊᏛ(QED) ࡢࡇࢀࡲ࡛ࡢ◊✲ࡣ㸪㠀⥺ᙧࢥࣥࣉࢺࣥᩓ
஘ࡸ㟁Ꮚ࣭㝧㟁Ꮚᑐ⏕ᡂ࡞࡝༢୍㐣⛬ࡀ୰ᚰ࡛࠶ࡗࡓ㸬ࡇࢀࡽࡢ࢝ࢫࢣ࣮ࢻ⌧㇟㸪ࡍ࡞ࢃࡕ㸪㟁Ꮚ࣭㝧㟁Ꮚ࣭ගᏊ࠿ࡽ࡞ࡿࣉࣛࢬ࣐≧ែ࡟⯆࿡ࡀ㞟ࡲࡾࡘࡘ࠶ࡿ㸬ࡑࡢࡼ࠺࡞ࣉࣛࢬ࣐ࢆ⾲⌧ࡍࡿ
㍺㏦᪉⛬ᘧࢆ㸪ᯝࡓࡋ࡚㠀⥺ᙧQED࡟㐺ྜࡋࡓᙧᘧ࡛ᑟฟ࡛ࡁࡿࡔࢁ࠺࠿㸬ࡑࡶࡑࡶ㔞Ꮚሙ࠿ࡽศ
ᕸ㛵ᩘࢆ࡝ࡢࡼ࠺࡟ᐃᘧ໬ࡍ࡭ࡁ࠿㸬ྑᅗࡣ༢୍
㟁Ꮚ⣔࡛ࡢ㠀⥺ᙧࢥࣥࣉࢺࣥᩓ஘ࢆࣔࣥࢸ࢝ࣝࣟ
ィ⟬ࡋࡓࡶࡢ࡛࠶ࡿ㸬࢝࢘ࣥࢺᩘࢆศᕸ㛵ᩘ࡟ぢ❧࡚ࢀࡤ㸪㍺㏦᪉⛬ᘧ࡟ᚑࡗ࡚ศᕸ㛵ᩘࡀ᫬㛫Ⓨᒎࡋ࡚࠸ࡿ࡜ㄆ㆑࡛ࡁࡿ㸬ࡇࢀࢆከ⢏Ꮚ໬ࡋࡓ࠸㸬ࡑࡇ࡛ࠊ㠀⥺ᙧQEDࡢࣛࢢࣛࣥࢪ࢔ࣥᐦᗘ࠿ࡽ┤᥋ⓗ࡟ከయ⣔ࡢ㍺㏦᪉⛬ᘧࢆᑟࡃ࡜࠸࠺◊✲ࢆ㛤ጞࡋࡓ㸬◊✲㛤ጞࡢࢱ࣮࣒࡜࠸࠺ࡇ࡜࡛㸪ඛ⾜◊✲࡟ೌ࠸㸪እሙࡢ࡞࠸ࢫ࣮࢝ࣛሙࢆྲྀࡾᢅ࠸㸪࢘࢕ࢢࢼ࣮㛵ᩘࢆ฼⏝ࡋࡓᨃศᕸ㛵ᩘࡢᵓᡂ᪉ἲ㸪┦ᑐㄽⓗ㍺㏦᪉⛬ᘧࡢᑟฟἲࢆ㏣㊧ࡋࡓ㸬
98FIG. ༢୍㟁Ꮚࡀ㠀⥺ᙧࢥࣥࣉࢺࣥᩓ஘࡛࢚ࢿࣝࢠ࣮ࡀ
ᗈᇦ࡟࡞ࡿᵝᏊࢆࣔࣥࢸ࢝ࣝࣟィ⟬ࡋࡓࡶࡢ㸬ࡇࡢᗈࡀࡾࡣศᕸ㛵ᩘࡑࡢࡶࡢ࡛㸪ᑐᛂࡍࡿ㍺㏦᪉⛬ᘧࡣ㠀⥺ᙧ
QEDࡢ➨୍ཎ⌮࠿ࡽᑟ࠿ࢀࡿ࡭ࡁ࡛࠶ࡿ㸬

Plasmoid generation by an interaction between a high-intensity laser and structured mediumᓊᮏὈ᫂1,2,3㸪ᯇ஭㝯ኴ㑻1,2 㸪㛗཭ⱥኵ41) ி㒔኱Ꮫ኱Ꮫ㝔࢚ࢿࣝࢠ࣮⛉Ꮫ◊✲⛉㸪2)ி㒔኱Ꮫ㠀⥺ᙧ࣭㠀ᖹ⾮ࣉࣛࢬ࣐⛉Ꮫ◊✲ࣘࢽࢵࢺ,3)ி㒔኱Ꮫ࢚ࢿࣝࢠ࣮⌮ᕤᏛ◊✲ᡤ, 4) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤPmPm

45 Pm

SUMMARY㧗ᙉᗘ࣮ࣞࢨ࣮࡛⏕ᡂࡉࢀࡿࣉࣛࢬ࣐࡟͆㛢ࡌ㎸ࡵ͇ࡢᴫᛕࢆᑟධࡍࡿࡇ࡜࡛ࠊ㧗࢚ࢿࣝࢠ࣮ᐦ
ᗘࡢࣉࣛࢬࣔ࢖ࢻࡢᑐྥ⾪✺࡟ࡼࡿ☢ሙ஘ὶࡢ⏕ᡂࡸ཯㌿☢ሙ㓄఩ࡢᙧᡂ࡞࡝ࡀど㔝࡟ධࡿࠋᮏ◊✲࡛ࡣࠊ㜰኱࣮ࣞࢨ࣮◊ࡢ㍽ᑕὶయࢥ࣮ࢻࢆ⏝࠸ࡓࢩ࣑࣮ࣗࣞࢩࣙࣥ◊✲ࢆᐇ᪋ࡋࠊᵓ㐀ᛶ፹㉁㸦ࢧࣈPmࡢᚤ⣽ᵓ㐀ࢆ௜୚ࡋࡓ≀㉁㸧࡟┦ᑐㄽ㡿ᇦࡢ㧗ᙉᗘ࣮ࣞࢨ࣮ࢆ↷ᑕࡍࡿࡇ࡜࡛⏕ᡂࡍࡿࣉࣛࢬ࣐ࡀࠊ⮬ᕫ⤌⧊໬㐣⛬࡟ࡼࡾ័ᛶ᫬㛫ࢆ㉺࠼࡚ಖᣢࡉࢀࡿᶵ⬟ࢆ᳨ドࡍࡿࠋࡇࢀ࡟ࡼࡾࠊỈ⣲࣭࣍࢘⣲⇕᰾⼥ྜࡢࡳ࡞ࡽࡎࠊ㧗ᙉᗘ X ⥺※ࡸ୰ᛶ※ࢆྵࡴከᵝ࡞Ꮫ⾡ᛂ⏝࡟㈨ࡍࡿ◊✲࡬ࡢᒎ㛤ࡀᮇᚅ࡛ࡁࡿࠋ
ྑᅗࡣࠊᩘ 10μm ࣮࢜ࢲࡢ✵Ὕ࡟㧗ᙉᗘ࣮ࣞࢨ࣮ࢆ↷ᑕࡋࡓሙྜࡢ⏕ᡂࣉࣛࢬ࣐࡜ࡑࢀࡀసࡿ
⮬ᕫ☢ሙࡢ⢏Ꮚࢩ࣑࣮ࣗࣞࢩࣙࣥ⤖ᯝࢆ♧ࡍࡀࠊᮏ◊✲࡛ࡣࠊ㛗཭➼࡟ࡼࡗ࡚㛤Ⓨࡉࢀࡓ㍽ᑕὶయࢥ࣮ࢻ࡟ࡼࡾࠊࢼࣀ⛊࣮࢜ࢲࡢࢲ࢖ࢼ࣑ࢵࢡࢫࢆ
㏣㊧ࡍࡿࡇ࡜࡛ࠊࣉࣛࢬ࣐ࣔ࢖ࢻࡢ⏕ᡂ࣭ᄇฟࡢ
㐣⛬ࡢ෌⌧ࢆ┠ᣦࡍࠋyzxFIG. ࣮ࣞࢨ࣮↷ᑕᚋt = 640 fs࡟࠾ࡅࡿ⏕ᡂ㧗࢚ࢿࣝࢠ࣮
㟁Ꮚ㸦ᕥᅗ㸧࡜☢ሙ Bz 㸦ྑᅗ㸧ࡢ✵㛫ศᕸᅗࠋୗᅗࡣ
㟁Ꮚ⥺ࣜࢯࢢࣛࣇ࢕࣮࡜ࣉࣛࢬ࣐࢚ࢵࢳࣥࢢᢏ⾡࡛సᡂࡋࡓࣉࣛࢬ࣐ࣔ࢖ࢻ⏕ᡂ⏝ࡢ✵Ὕ࡜ࣉࣛࢬ࣐⇞ᩱ࡟ᑐᛂࡍࡍࢧࣈμm ⏝ࡢࣟࢵࢻ㞟ྜయࠋ
99㧗ᐦᗘࣉࣛࢬ࣐୰࡛ࡢ᢬ᢠ⋡໙㓄࡛⏕ᡂࡍࡿᙉ☢ሙィࡢࣔࢹࣜࣥࢢ

⩚ཎⱥ᫂ୖᒣ៞඾Ᏻ㒊ຬ㍤ᇛ㷂▱⮳㛗཭ⱥኵ ኱㜰኱Ꮫ኱Ꮫ㝔ᕤᏛ◊✲⛉ ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ ᗈᓥ኱Ꮫ኱Ꮫ㝔ඛ㐍⌮ᕤ⣔⛉Ꮫ◊✲⛉

SUMMARY(a)݊ୣ

ᮏ◊✲ࡣࠊ㧗㏿Ⅼⅆ᪉ᘧ࡟࠾ࡅࡿ㏣ຍ⇕࣮ࣞࢨ࣮ࡢࢥ࢔ࣉࣛࢬ࣐ຍ⇕ຠ⋡ྥୖࢆ┠ⓗ࡜ࡋ࡚࠾ࡾࠊຍ⇕࡟ᐤ୚ࡍࡿ㧗㏿㟁Ꮚࢆ㞟᮰ࡉࡏࡿᡭἲࡢ
୍ࡘ࡜ࡋ࡚ࠊ᢬ᢠ⋡໙㓄࡛⏕ᡂࡉࢀࡿ⮬ᕫ⏕ᡂ☢
ሙࡢά⏝ࢆ᳨ウࡋ࡚࠸ࡿࠋᮏᖺᗘࡣࠊ୍᫖ᖺᗘ࡟
⾜ࡗࡓᐇドᐇ㦂࡟࠾ࡅࡿࣉࣛࢬ࣐ศᕸࢆὶయࢩ
࣑࣮ࣗࣞࢩࣙࣥࢆ⏝࠸࡚෌⌧ࡋࠊᚓࡽࢀࡓ⢏Ꮚᩘᐦᗘศᕸࢆ⏝࠸࡚⢏Ꮚࢩ࣑࣮ࣗࣞࢩࣙࣥࢆ⾜࠸☢
ሙ⏕ᡂࢆ᳨ドࡋࡓࠋࡑࡢ⤖ᯝࠊ㟁Ꮚ࡜࢖࢜ࣥࡢ⾪✺ࢆ⪃៖ࡋࡓࢩ࣑࣮ࣗࣞࢩࣙࣥࡢࡳ࡟࠾࠸࡚㟁㞳ᗘࡀ␗࡞ࡿࣉࣛࢬ࣐ࡢቃ⏺࡛☢ሙࡀⓎ⏕ࡍࡿࡇ࡜ࡀ☜ㄆࡉࢀࠊ᢬ᢠ⋡ኚ໬࡟㉳ᅉࡍࡿ☢ሙࡀᐇ㦂࡟
࠾࠸࡚ࡶⓎ⏕ࡋᚓࡓࡇ࡜ࡀ♧ࡉࢀࡓࠋࡲࡓࠊᮏࢩ
࣑࣮ࣗࣞࢩࣙࣥ࡟࠾࠸࡚ࡣ᭱኱7⛬ᗘࡢ☢ሙࡀ
Ⓨ⏕ࡋ࡚࠾ࡾࠊ☢ሙࡢᙉᗘ࡜ᖜ࠿ࡽࠊ0H9ࡢ㧗㏿㟁Ꮚ࡛࠶ࢀࡤධᑕゅrࡲ࡛ࡢ㟁Ꮚࢆ㞟᮰ࡉࡏࡿࡇ࡜ࡀྍ⬟࡛࠶ࡿ࡜ぢ✚ࡶࡽࢀࡓࠋ(b)݊୬୧ୡ୩ୣ୪(c)݊େୌ

Fig. 1(a)(b)

Fig. 2
Fig. 1 ⢏Ꮚࢩ࣑࣮ࣗࣞࢩࣙࣥࡢึᮇᐦᗘศᕸ(a)㟁Ꮚᐦᗘࠊ(b)ࢽࢵࢣࣝ࢖࢜ࣥᐦᗘࠊ(c)CH࢖࢜ࣥᐦᗘ
Fig. 2 ㏣ຍ⇕࣮ࣞࢨ࣮↷ᑕ᫬ࡢ☢ሙศᕸ(a)⾪✺ࢆ⪃៖ࡋ࡞࠿ࡗࡓሙྜࠊ(b)⾪✺ࢆ⪃៖ࡋࡓሙྜ
100ࣉࣛࢬ࣐ࠊὶయ୰࡟⏕ࡌࡿᐦᗘᡂᒙࢆకࡗࡓ

ᒙࡢ㠀⥺ᙧⓎᒎ࡟㛵ࡍࡿ◊✲ᯇᒸ༓༤1,2,31)኱㜰බ❧኱Ꮫ኱Ꮫ㝔ᕤᏛ◊✲⛉, 2)኱㜰බ❧኱Ꮫ༡㒊㝧୍㑻≀⌮Ꮫ◊✲ᡤ (NITEP),
3) ኱㜰බ❧኱ᏛᩘᏛ◊✲ᡤ (OCAMI)SUMMARY㠀୍ᵝ࡞ ᗘࢆࡶࡗࡓ⏺㠃࡝࠺ࡋࡢ┦஫స⏝࡜ࡋ
࡚ࠊከᒙRichtmyer-Meshkov୙Ᏻᐃᛶࡢ㠀⥺ᙧⓎᒎࡀㄪ࡭ࡽࢀࡓࠋࡑࡢ⤖ᯝࠊከᒙ⏺㠃࡟࡞ࡿ࡜࡝ࡢ
ࡼ࠺࡞ึᮇ ᗘศᕸ࡛࠶ࡗ࡚ࡶ༢୍⏺㠃ࡢሙྜ࡟ẚ࡭࡚ ᗘࡢቑᖜࡀ኱ࡁ࠸ࡇ࡜ࠊ≉࡟ᙉ࠸ ᗘࢆࡶࡗࡓ⏺㠃ࡀᙅ࠸཯ᑐ➢ྕࡢ ᗘࢆࡶࡗࡓ⏺㠃ࢆ
㏣࠸࠿ࡅࡿሙྜࡣ๓⪅ࡢ⏺㠃ୖ࡟㠀ᖖ࡟኱ࡁ࡞
ᗘࡀㄏᑟࡉࢀࡿࡇ࡜ࡀࢃ࠿ࡗࡓ[1]ࠋࡇࡢ⤖ᯝࡣᕧ኱ྎ㢼ࡀ࿘㎶ࡢᑠࡉ࡞ࢧࢸࣛ࢖ࢺ ࡟ࡼࡗ࡚ቑᖜ
ࡉࢀࡿᶵᵓࡢゎᯒ࡟ࡶᛂ⏝࡛ࡁࡿࠋ[1] C. Matsuoka and K. Nishihara, Nonlinear
interaction of two non-uniform vortex sheets and large
vorticity
amplificationinRichtmyer-Meshkov
instability, Phys. Plasmas, 30, 062304 (2023).

FIG. ⏺㠃㛫┦஫స⏝࡟ࡼࡿ ᗘቑᖜࠋ⦪㍈ࠊᶓ㍈ࡣࡑࢀࡒࢀ⏺㠃 ᗘࡢ⤯ᑐ್ࡢ᭱኱್ࠊ᫬㛫ࢆ⾲ࡍࠋᙉ࠸ᗘࢆࡶࡗࡓ⏺㠃ࡀ㉥ (I2) ࠊᙅ࠸ ᗘࢆࡶࡗࡓ⏺㠃ࡀ㟷(I1)࡛ᥥ࠿ࢀ࡚࠸ࡿࠋ㉥ⰍࡢⅬ⥺ࠊ㙐⥺ࡣ⏺㠃㛫㊥㞳dࢆኚ࠼ࡓሙྜࡢ ᗘࢆ♧ࡋࠊ㏵୰࡛⌧ࢀࡿ⥳ࡢⅬࡣ I1 ࡟ࡼࡗ࡚ I2ୖ࡟ㄏᑟࡉࢀࡿsecondary vorticityࢆ⾲ࡋ࡚࠸ࡿࠋ
101㔞Ꮚࣅ࣮࣒࡟ࡼࡾㄏ㉳ࡉࢀࡓࢸࣛ࣊ࣝࢶ㟁ሙࡢ㉸㧗㏿᳨ฟ
Ⳣ᫭୍1,2㸪୰ᔱㄔ31) ኱㜰኱Ꮫ⏘ᴗ⛉Ꮫ◊✲ᡤ㸪 2)㔞Ꮚ⛉Ꮫᢏ⾡◊✲㛤Ⓨᶵᵓ㸪 3) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ

SUMMARYࡇࢀࡲ࡛࡟ࠊ≉Ṧ┦ᑐᛶ⌮ㄽ࡛ண ࡉࢀࡿࠕ㟁☢ሙࡢṍࡳࠖࡀ┤᥋ⓗ࡟ほ ࡉࢀࡓࡇ࡜ࡣ࡞࠿ࡗ
ࡓࠋᡃࠎࡣࠊࡑࡢṍࡳࡢ┤᥋ⓗ࡞ᐇドࢆ⾜࠺ࡓࡵ࡟ࠊ㟁Ꮚ⥺ຍ㏿ჾ࡜ྠᮇࡋࡓ㉸▷ࣃࣝࢫ࣮ࣞࢨ࣮
ࢆ⏝࠸࡚ࠊࡉࡽ࡟㟁ẼගᏛຠᯝ࡟ࡼࡿ㉸㧗㏿㟁ሙィ ࢆᐇ᪋ࡋࡓ㸦ᅗ 1(a) 㸧ࠋᐇ㦂࡛ࡣࠊ࢚ࢩ࢙ࣟ
ࣥᘧࢩࣥࢢࣝࢩࣙࢵࢺィ ἲ࡟ࡼࡿ㉸㧗㏿᫬✵㛫㟁ሙศᕸࢆᚓࡓࠋࡇࢀ࡟ࡼࡾࠊ㟁☢Ẽ࡟࠾ࡅࡿ≉Ṧ┦ᑐᛶ⌮ㄽࡢᇶᮏ⌧㇟࡛࠶ࡿࠊ㟁ሙࡢ཰⦰ࡸ཰
⦰ࡀ㉳ࡁࡿ㐣⛬ࢆୡ⏺࡛ึࡵ࡚┤᥋ᐇドࡍࡿࡇ࡜࡟ᡂຌࡋࡓ[1]ࠋࡲࡓࠊ⌧ᅾࡣࢩࣥࢢࣝࢩࣙࢵࢺィἲ[2]ࡢᨵⰋࢆ⾜ࡗ࡚࠸ࡿ㸦ᅗ1(b)㸧ࠋ௒ᚋࠊ㟁Ꮚ⏤᮶ࡢ㟁☢ሙࡢᨺᑕ⌧㇟ࡢィ ࡬ࡶᛂ⏝ࡀྍ⬟࡛࠶ࡿࠋࡲࡓࠊ㟁ሙィ ࡟ᇶ࡙ࡁࠊග
※ຍ㏿ჾࡢࣅ࣮࣒デ᩿࡟ࡼࡿ≀㉁⛉Ꮫ࡬ࡢ㈉⊩ࠊ㔜⢏Ꮚ⥺࡟ࡼࡿᨺᑕ⥺἞⒪ࡢࣅ࣮࣒デ᩿ࡀᮇᚅࡉ
ࢀࡿࠋ
[1] M. Ota et al., Nature Physics 18, 1436–1440 (2022).
[2] Ⳣ᫭୍ࡽࠊ᪥ᮏ㉥እ⥺Ꮫ఍ㄅࠊ➨33 ᕳ 2 ྕࠊ
67-73ࠊ(2024)

FIG. 1 (a) 㟁ẼᕤᏛຠᯝ࡟ࡼࡿ㉸㧗㏿㟁ሙィ ࠋ (b) ࢚ࢩ࢙ࣟࣥᘧࢩࣥࢢࣝࢩࣙࢵࢺィ ἲࠋ102⤫ィࣔࢹࣝ࡟ࡼࡿගᏛᮦᩱࡢࢩ࣑࣮ࣗࣞࢩࣙࣥ࠾ࡼࡧࡑࡢ≀ᛶ࡬ࡢᛂ⏝࡟㛵ࡍࡿ◊✲బࠎᮌ ᫂㔞Ꮚ⛉Ꮫᢏ⾡◊✲㛤Ⓨᶵᵓ࣭㛵すග⛉Ꮫ◊✲ᡤ

SUMMARYගᏛᦆയࡢ」㞧࡞࣓࢝ࢽࢬ࣒ࡢゎ᫂ࢆ┠ⓗ࡟ࠊ⮬↛⏺࠾ࡼࡧேᕤⓗ࡞ከᵝ࡞⤯⦕◚ቯ⌧㇟ࡢ≀⌮ࣔࢹࣝ࡜ࢩ࣑࣮ࣗࣞࢩࣙࣥࡢ◊✲ࢆ⾜ࡗ࡚࠸ࡿࠋ
௒ᖺᗘࡣ㞾⌧㇟ࡢ஧ḟඖࣔࢹࣝ࡟ࡼࡿゎᯒ᪉ἲࡢ◊✲ࢆ⾜ࡗࡓࠋ」㞧࡞⌧㇟ࡢィ⟬࡟࠾࠸࡚ࠊほ㔞࡜ࡑࡢᣲືࢆẚ㍑ࡍࡿࡇ࡜ࡢ㔜せᛶ࡟ὀ┠ࡋࠊ๓ᖺᗘࡲ࡛㞾㞼୰࡟ὶࢀࡿ㟁ὶࡢ᪉⛬ᘧࢆグ㏙ࡋ࡚࠸ࡓࡢ࡟ᑐࡋࠊ㟁Ⲵࡢ᪉⛬ᘧࢆグ㏙ࡋࠊୖ᪼Ẽὶ୰࡛ࡢ㟁Ⲵࡢศ㞳ࠊ㝆㞵࡟ࡼࡿ⛣ືࠊᙉ࠸㟁⏺
ࡢ⏕ᡂ࡜⤯⦕◚ቯ࡟ࡼࡿ෌⤖ྜࠊᾘ⁛࡜࠸࠺ᥥീ
࡟ᇶ࡙ࡃࣔࢹࣝࢆ⪃࠼ࡓࠋ㞾㞼୰ࡢ㟁ⲴࡢศᕸࡣࠊẼ⌫࡞࡝ࢆ౑ࡗ࡚ほࡉࢀࠊࡉࡲࡊࡲ࡞ᵓ㐀ࢆᣢࡘࡇ࡜ࡀ▱ࡽࢀ࡚࠸ࡿࠋ
ࡑࡇ࡛ᨺ㟁ࡢⓎ⏕ࡀࢺࣜ࢞ࡉࢀࡿ࣓࢝ࢽࢬ࣒࡜ࠊ
Ⓨ⏕ࡋࡓᨺ㟁ࡀ㞼୰࠶ࡿ࠸ࡣᆅ⾲࡬࡜ఏ᧛ࡍࡿ࣓
࢝ࢽࢬ࣒࡟ࡘ࠸᳨࡚ウࡋࡓࠋ⌧㇟ࡢ⤫ィⓗ࡞ᛶ㉁ࢆ฼⏝ࡋࡓຠ⋡ⓗ࡞ィ⟬ᡭἲ࡟ࡘ࠸࡚ࡶ᳨ウࡋࡓࠋ103㸦ᅗ㸧㞾⌧㇟ࡢ஧ḟඖࣔࢹࣝࠋ (a)ࡣ࣏ࢸࣥࢩࣕࣝࢆࠊ(b) ࡣ㟁⏺ࡢᙉᗘࢆࠊᅗ୰ࡢ⥺ࡣᨺ㟁ࢆ♧ࡍࠋ᫬㛫Ⓨᒎࡢ࠶ࡿ᫬้࡟࠾ࡅࡿ⤖ᯝࢆ♧ࡍࠋ✵㛫ࢆ࣓ࢵࢩࣗ㸦33 x
33㸧࡟ศࡅࠊ㟁Ⲵࡣ㔞Ꮚ໬ࡉࢀ࣓ࢵࢩࣗ࡟᮰⦡ࡉࢀࡿ࡜
ࡋ࡚ィ⟬ࢆຠ⋡໬ࡋࡓࠋ㟁Ⲵࡣ☜⋡ⓗ࡟⏕ᡂࡋࠊ☜⋡ⓗ࡟⛣ືࡍࡿ࡜⪃࠼ࠊ㝆㞵ࡢຠᯝࢆ⪃៖ࡋࡓࠋ㟁Ⲵࡢศᕸ࠿ࡽ㟁⏺ࢆồࡵࠊࡑࡢ್ࡀ㜈್ࢆ㉸࠼ࡿࡇ࡜࡛ᨺ㟁ࡀ㉳ࡇࡿ࡜⪃࠼ࡓࠋ

᪥ᮏࡢఏ⤫ᶍᵝ㸦㟷ᾏἼ㸧ࡢTHz-SRRࣃࢱ࣮ࣥࡢ ᐃᮤ ┦㘏1㸪୰ᔱ ㄔ21)㫽ྲྀ኱ᏛᕤᏛ㒊㸪2) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ

SUMMARY࣓ ࢱ ࣐ ࢸ ࣜ ࢔ ࣝ ࡢ ከ ࡃ ࡣ Sprit Ring Resonator(SRR)ࡢ࿘ᮇ㓄ิ࡛ᐇ⌧ࡉࢀࡿࠋSRR࿘ᮇ㓄ิ࡛⏝࠸ࡿࣃࢱ࣮ࣥࡣC ᏐᆺࡲࡓࡣࢥࡢᏐᆺࡀ୺࡛࠶ࡿࠋ
ᮏ◊✲࡛ࡣ᪥ᮏࡢఏ⤫ఏ⤫ᶍᵝࡢ୍✀࡛࠶ࡿ㟷ᾏἼࣃࢱ࣮ࣥࢆࢸࣛ࣊ࣝࢶᖏSRRࡢࣃࢱ࣮ࣥ࡜ࡋ࡚
ᛂ⏝ࡋࠊ THz Ἴࡢ㏱㐣≉ᛶࢆㄪ࡭ࠊ THz ᖏࡢ࣓ࢱ࣐ࢸࣜ࢔ࣝࢹࢨ࢖ࣥ࡟࠾ࡅࡿࣇࣞ࢟ࢩࣅࣜࢸ࢕ࢆ
㧗ࡵࡿࡇ࡜ࡀ┠ⓗ࡛࠶ࡿࠋ㟷ᾏἼࣃࢱ࣮ࣥ࡟࠾࠸
࡚⥺ᖜࠊ⥺㛫㛫㝸ࠊ⥺ࡢᩘࢆࣃ࣓࣮ࣛࢱ࡜ࡋࠊ᭷㝈せ⣲ἲࢩ࣑࣮ࣗࣞࢩࣙࣥ࡟ࡼࡿタィࢆ⾜ࡗࡓࠋ㧗᢬ᢠ Siᇶᯈୖ࡟ Auࢆ⏝࠸࡚ SRRࣃࢱ࣮ࣥࢆస〇ࡋࠊTHzἼࡢ㏱㐣≉ᛶࢆㄪ࡭ࡓࠋ

n=2

n=3

n=4

n=5

Ϭ͘ϴϵ
ϭ͘Ϭϳ
ϭ͘ϯϲ
ϭ͘ϴϴ

FIG. ᮏᩘ ʤn=2~5ʥ ࢆኚ໬ࡉࡏࡓ SRR ࣃࢱ࣮ࣥ㸦⥺ᖜ
w=4Pm, ⥺㛫ࢠࣕࢵࣉ g=4Pm㸧࡟࠾ࡅࡿTHzἼࡢ㏱㐣≉ᛶ ᐃ⤖ᯝࢆ♧ࡍࠋ ᐃ࡟ࡼࡿ㧗᢬ᢠSiᇶᯈࡢㄏ㟁⋡ࢆ⏝࠸ࡓࢩ࣑࣮ࣗࣞࢩࣙࣥ⤖ᯝ࡜ࡶ୍⮴ࡍࡿࠋ
104༙ᑟయ࣮ࣞࢨ࣮ග※࡟࠾ࡅࡿࢫ࣌ࢵࢡࣝࡢホ౯࡜ᢚไ⏣㎶⛱1㸪┿㘠⏤㞝2 㸪 ᒣᮏ࿴ஂ21) ⏘ᴗᢏ⾡⥲ྜ◊✲ᡤ㸪2) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ
SUMMARY༙ᑟయ࣮ࣞࢨࡣ⊃ᖏᇦ࡞ࢫ࣌ࢡࢺࣝࢆ᭷ࡍࡿග
※࡛࠶ࡿࡓࡵࠊࢹ࢕ࢫࣉࣞ࢖ࡸ↷᫂࡟ᛂ⏝ࡋࡓሙྜࠊࢫ࣌ࢵࢡࣝࣀ࢖ࢬࡀⓎ⏕ࡍࡿࠋᮏ◊✲࡛ࡣࠊࡑࡢࢫ࣌ࢵࢡࣝࢆᐃ㔞ⓗ࡟ホ౯ࡋࠊᢚไࡍࡿᡭἲ
ࢆᥦ᱌ࡍࡿࡇ࡜ࢆ┠ⓗ࡜ࡍࡿࠋ༙ᑟయ࣮ࣞࢨ࡜✚ศ⌫ࢆ⤌ࡳྜࢃࡏࡓග※࠿ࡽᨺᑕࡉࢀࡿࢫ࣌ࢵࢡࣝࢥࣥࢺࣛࢫࢺ&Vࢆࠊ኱㜰኱Ꮫࡀಖ᭷ࡍࡿホ౯⿦⨨ࢆ⏝࠸࡚ᐃ㔞ⓗ࡟ホ౯ࢆ⾜ࡗࡓࠋ௒ᅇࠊࢩࣥࢢ࣮ࣝࣔࢻ࡜࣐ࣝࢳ࣮ࣔࢻࡢ
༙ᑟయ࣮ࣞࢨࢆ౑⏝ࡋࠊ✚ศ⌫ࡢ኱ࡁࡉࢆ㸴࢖ࣥࢳ࡜㸱࢖ࣥࢳ࡜ኚ᭦ࡋ࡚ホ౯ࢆ⾜ࡗࡓࠋ࣐ࣝࢳ
࣮ࣔࢻ࣮ࣞࢨࢆ౑⏝ࡍࡿࡇ࡜࡟ࡼࡾࠊࢫ࣌ࢵࢡࣝ
ࢆ኱ᖜ࡟ᢚไ࡛ࡁࡿࡇ࡜ࡀศ࠿ࡗࡓࠋࡲࡓࠊ✚ศ⌫ෆ࡛ࡢከ㔜཯ᑕࡀከ࠸ࠊ኱ࡁ࡞✚ศ⌫࡛ࢫ࣌ࢵࢡࣝࢆᢚไ࡛ࡁࡿࡇ࡜ࡶศ࠿ࡗࡓࠋ௒ᚋࡣࠊࡇࢀ
ࡽࡢ⤖ᯝࢆᛂ⏝ࡋࠊ࣮ࣞࢨග※ࢆ⏝࠸ࡓࢹ࢕ࢫࣉ
ࣞ࢖ࡸ↷᫂ᶵჾࡢಙ㢗ᛶࡢྥୖࡉࡏࡿ◊✲࡟ྲྀࡾ⤌ࡴணᐃ࡛࠶ࡿࠋ

FIG.ࢩࣥࢢ࣮ࣝࣔࢻ࡜࣐ࣝࢳ࣮ࣔࢻࡢ༙ᑟయ࣮ࣞࢨ࡜✚ศ⌫ࡢ኱ࡁࡉ࡟ࡼࡿࢫ࣌ࢵࢡࣝࢥࣥࢺࣛࢫࢺࡢホ౯⤖ᯝ㸦್ࡣࢫ࣌ࢵࢡࣝࢥࣥࢺࣛࢫࢺࢆ⾲ࡋ࡚࠸ࡿࠋ㸧105㧗ᐦᗘ⇿⦰ࡢᐇ⌧࡟ྥࡅࡓᾮయỈ⣲ࢆ඘ሸࡋࡓ୰ᐇ⌫ࢱ࣮ࢤࢵࢺࡢ㛤Ⓨ◊✲௦⾲⪅: ᒾᮏཷධᩍဨ㸸⸨ᒸ ៅ௓*᫭ྐ᰾⼥ྜ⛉Ꮫ◊✲ᡤࠊ *኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ

SUMMARY
ὶయຊᏛⓗ୙Ᏻᐃᛶࡢᙳ㡪ࢆཷࡅ࡟ࡃ࠸୰ᐇ⌫≧ࡢᾮయỈ⣲ࢱ࣮ࢤࢵࢺࡢ〇㐀ࡀ┠ⓗ࡛࠶ࡿࠋᾮ
యỈ⣲ࢆྵࡴヨᩱࡢ〇㐀࡟ࡣᴟప ࡀᚲせ࡛࠶ࡾᢏ⾡ⓗ࡞ᅔ㞴ࡀక࠺ࠋ௒ᖺᗘࡣᾮయỈ⣲ࢱ࣮ࢤࢵࢺࢆ⏕ᡂࡍࡿࡓࡵࡢᴟప ෭༷⿦⨨ࢆసᡂࡋࡓࠋࢱ࣮ࢤࢵࢺ෭༷㒊ࡣୖୗ㥑ືࡀྍ⬟࡞ᵓ㐀࡟࡞ࡗ࡚࠾ࡾࠊᾮయỈ⣲඘ሸ᫬࡟ࡣ⇕ࢩ࣮ࣝࢻෆ࡟᱁⣡ࡉࢀᐊ ࠿ࡽࡢࡩࡃ
ᑕ⇕ࢆ᭱ᑠ㝈࡟࡛ࡁࡿ㸦 FIG.1(a) ཧ↷㸧ࠋࡲࡓࠊࢱ࣮ࢤࢵࢺ㒊ࡣࡑࢀࢆᨭᣢࡋ࡚࠸ࡿSUS 〇ࣟࢵࢻ࡜ඹ࡟ᘬࡁᢤࡃࡇ࡜ࡀྍ⬟࡛෭༷ࢆ⥅⥆ࡋ࡞ࡀࡽࢱ࣮ࢤࢵࢺࡔࡅࢆ஺᥮࡛ࡁࡿࡼ࠺࡟࡞ࡗ࡚࠸ࡿࠋ
᏶ᡂᚋ࡟⾜ࡗࡓ෭༷ヨ㦂ࡢ⤖ᯝ FIG.1(b) ࡟♧ࡍࠋ෭༷㛤ጞ࠿ࡽ⣙ 5 ᫬㛫࡛ ~11Kࡲ࡛฿㐩ࡋ࡚࠾ࡾࠊ
ᾮయỈ⣲ࢆ⏕ᡂ࡛ࡁࡿ⎔ቃࡣᩚࡗࡓࠋ
᮶ᖺᗘࡣࢱ࣮ࢤࢵࢺࢆྲྀࡾ௜ࡅࢩ࢙ࣝ୰࡬ࡢᾮ
యỈ⣲඘ሸᐇ㦂ࢆᐇ᪋ࡍࡿணᐃ࡛࠶ࡿࠋ

(b)(a)
FIG. 1(a) ᾮయỈ⣲ࢱ࣮ࢤࢵࢺ⏕ᡂ⏝ᴟప ෭༷⿦⨨ࠋ
4.2K, 1.5Wࡢ෭༷⬟ຊࢆᣢࡘᑠᆺGM෭෾ᶵ1ྎࢆ౑⏝ࡋ࡚෭༷ࡍࡿࠋ (b) ෭༷ヨ㦂⤖ᯝࠋఏ⇕⟶ࡣ෭෾ᶵࡢ 2nd
Stage ㏆ഐࠊࢯࣝࢺࣥ➃Ꮚ㖡ࣈࣟࢵࢡࡣࢱ࣮ࢤࢵࢺྲྀࡾ
እࡋᶵᵓࡢ࠺ࡕ⇕᥋ゐࢆ☜ಖࡍࡿࢯࣝࢺࣥ➃Ꮚ࡟ࡘࡅࡓ
㖡ࣈࣟࢵࢡࠊヨᩱ㒊ࡣࢱ࣮ࢤࢵࢺࢆྲྀࡾ௜ࡅࡿ㒊ศࠋ106᪂つ㧗⼥Ⅼ㓟໬≀༢⤖ᬗࡢ⫱ᡂ࡜ගᏛ≉ᛶホ౯ᶓ⏣ ᭷Ⅽ1,2, ᇼྜ Ẏᙪ21) ᮾ໭኱Ꮫ 㔠ᒓᮦᩱ◊✲ᡤ, 2) ᮾ໭኱Ꮫ ᮍ᮶⛉Ꮫᢏ⾡ඹྠ◊✲ࢭࣥࢱ࣮

SUMMARYࡇࢀࡲ࡛ᮦᩱ᥈⣴ࡀ㐍ࢇ࡛ࡇ࡞࠿ࡗࡓ2200℃௨
ୖࡢ⼥Ⅼࢆ᭷ࡍࡿᶵ⬟ᛶ༢⤖ᬗᮦᩱ࡟ᑐࡋ࡚ࠊᮾ
໭኱Ꮫࡀ᪂ࡓ࡟㛤Ⓨࡋࡓ㧗⼥Ⅼ㓟໬≀ᮦᩱࡢ⤖ᬗ⫱ᡂᢏ⾡ࢆ⏝࠸ࡿࡇ࡜࡛ࠊᵝࠎ࡞Ⓨග୰ᚰඖ⣲ࢆῧຍࡋࡓ㧗⼥Ⅼ༢⤖ᬗࢆస〇ࡋࡓࠋ
ࡑࡢ୰࡛ErࢆῧຍࡋࡓLa2Hf2O7 㸦LHO:Er 㸧༢⤖ᬗ࡟ᑐࡋ࡚ࠊ X ⥺※ࢆ⏝࠸ࡓᨺᑕ⥺ᛂ⟅≉ᛶࡢホ౯ࢆ⾜ࡗࡓࠋࡑࡢ⤖ᯝࠊ X ⥺ࣛࢪ࣑࢜ࣝࢿࢵࢭࣥ
ࢫࢫ࣌ࢡࢺࣝ࡟࠾࠸࡚ࠊ440 nm㏆ഐࡢࣈ࣮ࣟࢻ࡞
Ⓨගࣆ࣮ࢡ࡜550 nm㏆ഐࡢࢩ࣮ࣕࣉ࡞Ⓨගࣆ࣮ࢡࡀ☜ㄆࡉࢀࡓ㸦ྑᅗ㸧ࠋࡉࡽ࡟ࠊ㉥እ㡿ᇦ࡛࠶ࡿ
980 nm㏆ഐ࡟࠾࠸࡚ࡶࢃࡎ࠿࡞Ⓨගࣆ࣮ࢡࡀ⌧ࢀ
ࡓࠋGd2SiO5ࢩࣥࢳ࣮ࣞࢱ⤖ᬗ࡜ࡢẚ㍑࡛ࠊⓎග㔞ࡣ⣙1,000 photons/MeV࡜ぢ✚ࡶࡽࢀࡿࡀࠊᙜヱᮦᩱࡣࠊᚑ᮶ᮦᩱ࡟ẚ࡭࡚኱ࡁ࡞ᐦᗘࢆ᭷ࡋ࡚࠾ࡾࠊ
FIG. (Please put the figure caption here.)㧗࢚ࢿࣝࢠ࣮ᨺᑕ⥺ྥࡅ࡛㉥እ࡟ࡶⓎගࢆ᭷ࡍࡿ
Er ῧຍLa2Hf2O7༢⤖ᬗࡢ X⥺ࣛࢪ࣑࢜ࣝࢿࢵࢭࣥࢫࢫ࣌
᪂ࡓ࡞ࢩࣥࢳ࣮ࣞࢱ⤖ᬗ࡜ࡋ࡚ࡢᛂ⏝ࡀᮇᚅࡉࢀ
ࢡࢺࣝࠋ
ࡿࠋ
107

Space propulsion by EUV ablation and its application to the space debris trajectory transfer
K. Mori1, K. Nakai1, N. Miyake1, N. Tanaka2, J. E. Hernandez2, S. Fujioka2,31) Osaka Metropolitan University, Sakai, Osaka 599-8531 Japan, 2) Institute of Laser Engineering, Osaka University,
Suita, Osaka 565-0871 Japan, 3) National Institute for Fusion Science, Toki, Gifu, 509-5202 JapanSUMMARY
This research revealed impulse and momentum
coupling coefficients Cm for intense pulsed extreme
ultraviolet (EUV) ablation of metal targets; Al, Ti, and
SUS304. Experiments were conducted at six energy
fluences ranging from 16.1 to 157  Ȁ ଶ to compare
Cm with previous studies. The impulse attained 156
 ȉ  for Al target and showed similar results for Ti
and SUS304. The maximum momentum coupling
coefficient of Al target was ͳǤͷ͸ ൈ ͳͲିହ Τ. Thismay be attributed to the fact that Al has the highest
photon absorption among the three materials showing
noticeable ablation characteristics of EUV’s strong Z
dependence. Our results pushed the threshold of ‫ߣܫ‬Ȁ ߬,
the normalizing parameter, towards lower sidecompared to previous studies with conventional laser(Fig. 1) suggesting potential feasibility of space
propulsion by short-wavelength radiation.

FIG. 1 Momentum coupling coefficients for ultraviolet laser atߣ ൌ ʹͶͺ (C. Phipps et al., J. Appl. Phys., 64, 1083, 1988)
and that for extreme ultraviolet radiation at ߣ ൌ ͳͲ െ ʹͲ
obtained in this study.
108

109

GaNࡢ⇕ఏᑟ⋡࡟ⅬḞ㝗ࡀ୚࠼ࡿᙳ㡪
Ἑᮧ㈗ᏹ1㸪すᒣ⛸ᝅ1㸪᳃ຬ௓2㸪ྜྷᮧᨻᚿ31) ୕㔜኱Ꮫ኱Ꮫ㝔ᕤᏛ◊✲⛉㸪2) ኱㜰኱Ꮫ኱Ꮫ㝔ᕤᏛ◊✲⛉㸪3) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ

SUMMARY;ĂͿ;ďͿ༙ᑟయࡢ≉ᛶࡣ୙⣧≀ῧຍ࡟ࡼࡗ࡚ไᚚࡉࢀࡿ
ࡀࠊࡑࢀ࡟ࡼࡗ࡚GaN ᮏ᮶ࡢඃࢀࡓ⇕≀ᛶࡀຎ໬ࡋ࡚ࡋࡲ࠺ࡇ࡜ࡀၥ㢟࡜࡞ࡿࠋࡑࡇ࡛ᮏ◊✲࡛ࡣ
ⅬḞ㝗ࡸ୙⣧≀ࢆྵࡴ GaN ࡢ⇕ఏᑟ⋡ࢆண ࡋࠊࡉࡽ࡟⇕ఏᑟ⋡࡟ᑐࡍࡿḞ㝗ࡢᙳ㡪ࢆ⌮ゎࡍࡿࡇ࡜ࢆ┠ⓗ࡜ࡋ࡚➨୍ཎ⌮ィ⟬࡟ࡼࡿゎᯒࢆ⾜ࡗࡓࠋGa✵Ꮝ㸦VGa㸧ࠊO⨨᥮ᆺḞ㝗㸦ON㸧ࠊO౵ධᆺḞ㝗㸦Oint㸧ࢆྵࡴGaNࡢ⇕ఏᑟ⋡ゎᯒࢆ⾜ࡗࡓ⤖;ĚͿᯝ࠿ࡽࠊࡇࢀࡽࡢḞ㝗࡟ࡼࡗ࡚⇕ఏᑟ⋡ࡀ኱ࡁࡃ ;ĐͿῶᑡࡋࠊࡑࡢ⇕ఏᑟ⋡ࡢ኱ࡁࡉࡣࠊ᏶඲⤖ᬗ > ON
> VGa > Ointࡢ㡰࡟࡞ࡿࡇ࡜ࡀศ࠿ࡗࡓ㸦Fig. 1a㸧ࠋ⇕ఏᑟ⋡ࡣẚ⇕ࠊࣇ࢛ࣀࣥࡢ⩌㏿ᗘ࡜⦆࿴᫬㛫࡟ࡼࡗ࡚Ỵᐃࡉࢀࡿࡓࡵࠊࡑࢀࡽ࡟ࡘ࠸࡚ࡶゎᯒࢆ⾜ࡗࡓ࡜ࡇࢁࠊẚ⇕ࡣ࡯࡜ࢇ࡝ᙳ㡪ࢆཷࡅ࡚࠸࡞
࠸ࡀ㸦Fig. 1b㸧ࠊ⩌㏿ᗘ࡜⦆࿴᫬㛫ࡣḞ㝗ࡢᙳ㡪࡟ࡼࡗ࡚ῶᑡࡋࡓ㸦Fig. 1c, 1d㸧ࠋࡑࢀࡽࡢ್ࡢ኱
ᑠ㛵ಀࡀ⇕ఏᑟ⋡ࡢኚ໬ࡢഴྥ࡜୍⮴ࡍࡿࡇ࡜࠿
ࡽࠊ⩌㏿ᗘ࡜⦆࿴᫬㛫ࡢኚ໬ࡀ⇕ఏᑟ⋡ࡢῶᑡ࡟
FIG. 1 (a) ⇕ఏᑟ⋡ࡢ ᗘ౫Ꮡᛶࠊ(b) ẚ⇕ࠊ(c) ࣇ࢛ࣀࣥᐤ୚ࡋ࡚࠸ࡿࡇ࡜ࡀศ࠿ࡗࡓࠋᮏ◊✲ᡂᯝࡣࢹࣂ
ࡢᖹᆒ⮬⏤⾜⛬ࠊ(d) ࣇ࢛ࣀࣥࡢ⦆࿴᫬㛫ࠋḞ㝗ᐦᗘࡣ࢖ࢫࡢᨺ⇕タィ࡟ᚲせ࡞⇕≀ᛶࢹ࣮ࢱࡢྲྀᚓ࡟ຍ
⣙ 1.2u1021 cm-3 ࡟ ┦ ᙜ ࡍ ࡿ ࠋ ྠ ఩ య ᩓ ஘ ࡜ ᑍ ἲ ຠ ᯝ࠼࡚ࠊ⇕≀ᛶ࡬ࡢᙳ㡪ࡢᑡ࡞࠸ῧຍ≀ࡢ᥈⣴࡟⧅
㸦1mm㸧ࢆ⪃៖ࡋࡓࠋࡀࡿࡇ࡜ࡀᮇᚅࡉࢀࡿࠋ
110

111

࣮࢝࣎ࣥࢼࣀࢳ࣮ࣗࣈࣇ࢛ࣞࢫࢺᶓ᪉ྥ㟁Ẽ≉ᛶホ౯ྂ⏣ ᐶ1, டᒸ ఙ⩏11) 㧗▱ᕤ⛉኱Ꮫ ࢩࢫࢸ࣒ᕤᏛ⩌SUMMARY࣮࢝࣎ࣥࢼࣀࢳ࣮ࣗࣈࣇ࢛ࣞࢫࢺࡢᶓ᪉ྥIV≉ᛶࢆホ౯ࡋࡓࠋ㧗ࡉ 1μm௨ୗ࡟ㄪᩚࡋ࡚ྜᡂࡋࡓ
CNT ࣇ࢛ࣞࢫࢺୖ㠃࡟ FIG ࡟♧ࡍࡼ࠺࡟㔠㟁ᴟࢆ⵨╔ࡋࠊCNTࣇ࢛ࣞࢫࢺࡢᶓ᪉ྥIV≉ᛶࢆホ౯ࡋࡓࠋCNTࣇ࢛ࣞࢫࢺࡢᵓ㐀ࡣゐ፹ࡢ࢔ࢽ࣮ࣝ᫬㛫ࢆቑຍࡍࡿࡇ࡜࡛ 740℃ ࡛ྜᡂࡋࡓ CNT ࣇ࢛ࣞࢫࢺࡢᵓ㐀ホ౯࡜ᑟ㟁⋡ࡢẚ㍑ࢆ⾜ࡗࡓࠋᑟ㟁⋡ࡢ㧗࠸ヨᩱࡣCNT┤ᚄࡀ኱ࡁࡃࠊCNT㠃ᐦᗘࡀప࠸
ࡇ࡜ࡀศ࠿ࡗࡓࠋ 715℃ ࡛ྜᡂࡋࡓ CNT ࣇ࢛ࣞࢫࢺ࡛ࡣࠊ10᫬㛫ࡢIV≉ᛶ㛫Ḟィ ࢆ⾜࠸ࠊIV≉ᛶ࡟࠾࠸࡚ࢥࣥࢲࢡࢱࣥࢫࡀୖ᪼ࡋ࡚࠸ࡃ⌧㇟ࢆぢฟࡋࡓࠋ㟁ὶ࡟ࡼࡿCNTྠኈࡢࢥࣥࢱࢡࢺᙧᡂ࡜
࣓ࣔࣜຠᯝࡢⓎ⌧ࡀ♧၀ࡉࢀࡓࠋ

FIG. CNTࣇ࢛ࣞࢫࢺࡢᶓ᪉ྥ㟁Ẽ≉ᛶホ౯⿦⨨ᵓᡂ[1]ᘬ⏝ டᒸఙ⩏, 㧗▱ᕤ⛉኱Ꮫಟኈㄽᩥ (2024.03)
112

ϕϧθϜଲ޴ࡒ͹਼஍ϠυϨϱή
◁ཎ῟1, ᇛ㷂▱⮳2, 㞴Ἴ឵୍2, すཎຌಟ3, ᒣᮏ┤Ⴙ4,᳃⏣ኴᬛ4, ᮾཱྀṊྐ5 , ᐩ⏣೺ኴ㑻6 , ⏿ᫀ⫱7,㛗཭ⱥኵ31) Center for Materials Under Extreme Environments (CMUXE), School of Nuclear Engineering, Purdue University,
USA, 2) ᗈᓥ኱Ꮫ, 3) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ, 4) ஑ᕞ኱Ꮫ, 5) Ᏹ㒔ᐑ኱Ꮫ, 6) ໭ᾏ㐨኱Ꮫ6) QST㛵す◊.
SUMMARYըʓͺϪʖδʖ֫༧߻ϕϧθϜ͖Δ࿏અ‫ܯ‬ͶࢺΖմੵͶ͓࢘Ζ਼஍εϝϣϪʖεϥϱαʖχ͹֋൅Ν໪ࢨ͢ͱ͏Ζɽ֫༧߻೫রϕϧθϜ͖Δ͹೘ྙͶଲͤΖ֫༧߻࿏୊Ҳป͹Ԣ౶Ν஦ৼͳͪ͢ঀ
գఖʤཽࢢͶปɼ᫖ࣻͶཽࢢͶป૮‫༽ࡠޕ‬ɼป͹ξ΢ψϝέηʥ͹ϝέϫɼϜέϫͶΚͪΖԢ౶Ͷͯ͏ͱఈྖద͵෼ཀྵϠυϨϱή‫ߑڧ؂‬஛Ν໪ࢨ͢
ͱ͏Ζɽຌ೧್ౕԻౕΦϋϩάʖฯଚघ๑͹րྒྷΝਦ࣏ͮͪ̐‫ݫ‬᫖ࣻླྀରεϝϣϪʖεϥϱαʖχ^ƚĂƌϮ Ν ༽͏ɼ‫;֐ࢷ୼ۅ‬hsͿޭ‫͠༽࢘Ͳݱ‬ΗΖηθϕϧθϜ͹ξ΢ψϝέη‫;ٶ‬hs൅ޭͶͯ͏ͱใ‫ׇ‬ద͵‫ݗ‬౾Νߨͮͪ ɽ Ϫʖδʖ֪༧߻ͺ΍ͳΓΕɼϪʖδʖՅ޽ɼǆત‫ݱ‬ɼϪʖδʖ֫༧߻ϫίρφͶ͕͜Ζࣕ‫ـ‬ηϧηνʖɼϪʖδʖՅଐͶ͕͜ΖϕϨϕϧθϜ͹࣎ؔ൅ఴ͵ʹɼଡ༹͵ড়݇Ͳ‫ܯ‬ࢋΝߨ͑͞ͳͶΓΕɼ^ƚĂƌϮ͹‫ࢋܯ‬੠ౕ‫ް༙;ٶ‬੓ɼ‫ࢋܯ‬੠ౕΝ֮೟ͤΖͳͳ΍Ͷɼ஥ࣰ͵αʖχրྒྷͶΓΕ਼஍҈ఈ੓͹͠Δ͵Ζ޴৏Νਦͮͱ͏͚ɽ

FIG. Star2Dࢆ⏝࠸࡚ึᮇࢫࢣ࣮ࣝ㛗100μmࡢࢫࢬࣉࣜࣉ
ࣛࢬ࣐࡟ྑ࠿ࡽCO2࣮ࣞࢨ࣮ࢆ↷ᑕࡋࡓ᫬ࡢ⭾ᙇࣉࣛࢬ࣐ࡢ㸰ḟඖศᕸࠋ࣮ࣞࢨ࣮ࢫ࣏ࢵࢺᚄࠊࣃࣝࢫᖜࢆኚ໬
ࡋ࡚ィ⟬ࢆᐇ᪋ࡋࡓࠋᅗࡣ࣮ࣞࢨ࣮ࣆ࣮ࢡ᫬ࡢ㟁Ꮚ ᗘࠋ113」ྜ࢔ࢽ࢜ࣥ໬ྜ≀ࢆ⏝࠸ࡓ᪂つⓎගᮦᩱࡢ㛤ⓎⲶ㔝ᣅ1㸪ᑿᓥ㡪1㸪ᒾబ♸ᕼ1㸪⊷಴ಙᙪ21) ⏘ᴗᢏ⾡⥲ྜ◊✲ᡤ㸪2) ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ

SUMMARY

700Υ

Intensity / a.u.

ᒙ≧໬ྜ≀ࡢ୰࡟ࡣࠊ✚ᒙᵓ㐀ࡀኳ↛ࡢ㔞Ꮚ஭ᡞ࡜ࡋ࡚ᶵ⬟ࡍࡿࡇ࡜࡟ࡼࡾࠊᵝࠎ࡞≉␗≀ᛶࢆⓎ⌧ࡍࡿ໬ྜ≀ࡀᏑᅾࡍࡿࠋᡃࠎࡣࡇࢀࡲ࡛࡟ࠊ”」ྜ࢔ࢽ࢜ࣥ໬ྜ≀”ࡢ≉ᚩࢆά⏝ࡍࡿࡇ࡜࡛ከࡃࡢ
ᒙ≧໬ྜ≀ࢆⓎぢࡋࠊ Sr3Sc2Cu2Ch2O5,
Sr2ScCuChO3[1,2] ࡞࡝ບ㉳ᏊⓎගࢆ♧ࡍ≀㉁ࡢྜ
ᡂ࡟ࡶᡂຌࡋ࡚ࡁࡓࠋࡇࢀࡽࡢ໬ྜ≀ࡣࠊ༙ᑟయ
࡛࠶ࡿCuSᒙ࡜⤯⦕ᒙࡢSrScOᒙ࡛ᵓᡂࡉࢀࣂࣥࢻ
࢚ࢵࢪ㏆ഐ࡟㗦࠸Ⓨග⥺ࡀほ ࡉࢀࡿࠋ௒ᅇࡣࠊ
㢮⦕໬ྜ≀࡛࠶ࡿCa2AlCuSO3ࡢྜᡂࢆヨࡳࡓࠋᗘ࡞࡝ࡢྜᡂࣃ࣓࣮ࣛࢱࢆኚ໬ࡉࡏࡓ࡜ࡇࢁࠊ
900℃࡛ࡢ↝ᡂ࡟ࡼࡾ┠ⓗ┦ࡀ⏕ᡂࡋ࡚࠸ࡿ඙ೃࡀぢࡽࢀࡓࠋ௒ᚋࡣྜᡂ᮲௳ࢆኚ໬ࡉࡏ࡚༢┦໬ࡋࠊ≀ᛶホ౯ࡸගᏛ≉ᛶホ౯ࢆ㐍ࡵ࡚࠸ࡃணᐃ࡛
࠶ࡿࠋ

800Υ

900Υ

20

[1] H. Ogino et al., Appl. Phys. Lett. 101 (2012) 191901[2] Y. Iwasa, H. Ogino et al., J. Mater. Sci.: Mater. Electron. 30 (2019)16827-16832

40
2T / deg.

60

FIG.ྜᡂ ᗘࢆኚ໬ࡉࡏࡓ㝿ࡢ
Ca2AlCuSO3ࡢXRDࣃࢱ࣮ࣥ
114

80

115

6XPPDU\

116

Pulsed laser deposition of tin on silicon substrates using nanosecond laser
M. Wada1, J.E. Hernandez2, N. Tanaka2, and S. Fujioka2
1) Graduate School of Science and Engineering, Doshisha University, Kyotanabe, Kyoto, 610-0321 Japan,2) Institute of Laser Engineering, 2-6 Yamada-oka, Suita, Osaka, 565-0871, JapanSUMMARY
Pulsed laser deposition is used to mimic thephenomenon of tin debris contamination in extreme
ultraviolet lithography (EUVL) scanner systems. A
nanosecond pulsed laser of 1064 nm wavelength, 5 ns
pulse width is used to fabricate tin coated siliconsamples using pulsed laser deposition for the future use
in evaluating the performance of extreme ultraviolet
light-assisted cleaning device in ILE, Osaka University.
Experiments are performed in Doshisha University. The
laser light is focused on the lens, creating a 1 mm spot
diameter on a 10 mm cylindrical tin target
corresponding to a 5x109 W/cm2 laser intensity, as
shown in the left side of Fig. 1. The deposition
conditions are at 5x10-6 Torr at 20000 laser shots at 10
Hz repetition rate. The right side of Fig.1 shows thedeposited tin on the silicon samples. The tin coatedsamples will be analyzed by a scanning electron
microscope. Investigation of varying laser shots will be
performed in this fiscal year.

FIG. 1. (Left) Pulsed laser deposition schematic (Right)
Deposited tin image on silicon samples mounted on analuminum disk holder.
117࣮ࣞࢨ࣮ᾮ୰࢔ࣈ࣮ࣞࢩࣙࣥἲࢆ用࠸ࡓ土ተ୰ᨺᑕᛶ≀㉁ࡢศ㞳ᢏ⾡ 㛤Ⓨ▼㷂ⱥభ ୰஭ග⏨ ᭷ᕝᏳಙ㸰 ⚟஭ᕤᴗ኱Ꮫ ኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤ

SUMMARYᨺᑕ⥺᰾✀࡟ࡼࡿởᰁᅵተࡢ㝖ᰁ࡛ࡣࠊ⢓ᅵᒙ࡟྾╔ࡋࡓởᰁ≀㉁ࡢ㝖ཤࡀㄢ㢟࡜࡞ࡗ࡚࠸ࡿࠋ໬
Ꮫⓗ㝖ᰁἲ࡟ࡼࡗ࡚㝖ཤ࡛ࡁ࡞࠸ࠊ≀⌮ⓗ࡟ᅛ╔ࡋ࡚࠸ࡿ㸦ࠕෆໟࠖࡉࢀ࡚࠸ࡿ㸧≀㉁ࢆ㝖ཤࡍࡿ࡟ࡣࠊᅵተ⢏Ꮚࡢ◚○ࡀᚲせ࡛࠶ࡿ࡜⪃࠼ࡽࢀ࡚࠸ࡿࠋᮏ◊✲࡛ࡣࠊ⢓ᅵᒙࡢ୺せᡂศ࡛࠶ࡿࣂ࣮
࣑࢟ࣗࣛ࢖ࢺ࡟࣮ࣞࢨ࣮↷ᑕࡍࡿࡇ࡜࡟ࡼࡗ࡚ᅵ
ተ⢏Ꮚࢆ⢊○ࡍࡿࡇ࡜࡟ࡼࡗ࡚ࠊ⢊○ᗘ㸦⢏ᚄศᕸ㸧࡜Csᅇ཰⋡ࢆ ᐃࡍࡿࠋᮏᖺᗘࡣࠊ⚟஭ᕤᴗ኱Ꮫ࡛ࡢⅣ㓟࢞ࢫ࣮ࣞࢨ࣮
࡜኱㜰኱Ꮫ࣮ࣞࢨ࣮⛉Ꮫ◊✲ᡤࡢYAG࣮ࣞࢨ࣮ࢆ
⏝࠸ࠊ㢮ఝࡢ࢚ࢿࣝࢠ࣮ࠊ↷ᑕ᮲௳࡛ࢧࣥࣉࣝ↷ᑕࢆ⾜࠸ࠊ⢓ᅵ⢏Ꮚࡢ⢊○ศᕸࢆㄪ࡭ࡓࠋ ࣃࣝࢫᖜࠊἼ㛗ࡢ㐪࠸࡟ࡶ㛵ࢃࡽࡎࠊ኱ࡁ࡞ᕪ␗ࡣほࡉࢀࡎࠊ௒ᚋࠊ↷ᑕ⣔ࡢᨵၿࡀᚲせ࡛࠶ࡿ࡜⪃
࠼ࡽࢀࡿࠋ

ॄޭϪϱθ
γϱϕϩฆର

FIG. ࢧࣥࣉࣝ↷ᑕᐇ㦂⣔
YAG࣮ࣞࢨ࣮㸦Continuum Model PL6010㸧ࡢฟຊࢆ㞟ගࣞࣥࢬ㸦f/150 or f/52㸧࡛ࢧࣥࣉࣝ㸦 ࣂ࣮࣑࢟ࣗࣛ࢖ࢺ
⢊య w/ or w/o Ỉ㸧࡟↷ᑕࡋࠊ⢊○⋡ࢆᑟฟࡋࡓࠋ
118

119