鈰的同位素

鈰（原子量：140.116(1)）的同位素，其中有1個同位素是穩定的，另外有3個目前歸類為穩定的同位素，理論上都會進行雙β衰變（衰變為鋇或釹），但是半衰期都只有下界。

## 圖表

119Ce

118.95276(64)#

200# ms

β+

119La

5/2+#

120Ce

119.94664(75)#

250# ms

β+

120La

0+

121Ce

120.94342(54)#

1.1(1) s

β+

121La

(5/2)(+#)

β+

122La

β+, p

121Ba

β+

123La

β+, p

122Ba

124Ce

123.93041(32)#

9.1(12) s

β+

124La

0+

β+

125La

β+, p

124Ba

126Ce

125.92397(3)

51.0(3) s

β+

126La

0+

127Ce

126.92273(6)

29(2) s

β+

127La

5/2+#

128Ce

127.91891(3)

3.93(2) min

β+

128La

0+

129Ce

128.91810(3)

3.5(3) min

β+

129La

(5/2+)

130Ce

129.91474(3)

22.9(5) min

β+

130La

0+

100(8) ns

(7-)

131Ce

130.91442(4)

10.2(3) min

β+

131La

(7/2+)

5.0(10) min

β+

131La

(1/2+)

132Ce

131.911460(22)

3.51(11) h

β+

132La

0+

9.4(3) ms

IT

132Ce

(8-)

133Ce

132.911515(18)

97(4) min

β+

133La

1/2+

4.9(4) h

β+

133La

9/2-

134Ce

133.908925(22)

3.16(4) d

EC

134La

0+

135Ce

134.909151(12)

17.7(3) h

β+

135La

1/2(+)

20(1) s

IT

135Ce

(11/2-)

136Ce

135.907172(14)

觀測上穩定

0+

0.00185(2)

0.00185-0.00186

2.2(2) µs

10+

137Ce

136.907806(14)

9.0(3) h

β+

137La

3/2+

IT (99.22%)

137Ce

β+ (.779%)

137La

138Ce

137.905991(11)

觀測上穩定

0+

0.00251(2)

0.00251-0.00254

8.65(20) ms

IT

138Ce

7-

139Ce

138.906653(8)

137.641(20) d

EC

139La

3/2+

56.54(13) s

IT

139Ce

11/2-

140Ce

139.9054387(26)

Stable

0+

0.88450(51)

0.88446-0.88449

7.3(15) µs

6+

141Ce

140.9082763(26)

32.508(13) d

β-

141Pr

7/2-

142Ce

141.909244(3)

觀測上穩定

0+

0.11114(51)

0.11114-0.11114

143Ce

142.912386(3)

33.039(6) h

β-

143Pr

3/2-

144Ce

143.913647(4)

284.91(5) d

β-

144mPr

0+

145Ce

144.91723(4)

3.01(6) min

β-

145Pr

(3/2-)

146Ce

145.91876(7)

13.52(13) min

β-

146Pr

0+

147Ce

146.92267(3)

56.4(10) s

β-

147Pr

(5/2-)

148Ce

147.92443(3)

56(1) s

β-

148Pr

0+

149Ce

148.9284(1)

5.3(2) s

β-

149Pr

(3/2-)#

150Ce

149.93041(5)

4.0(6) s

β-

150Pr

0+

151Ce

150.93398(11)

1.02(6) s

β-

151Pr

3/2-#

152Ce

151.93654(21)#

1.4(2) s

β-

152Pr

0+

153Ce

152.94058(43)#

500# ms >300 ns

β-

153Pr

3/2-#

154Ce

153.94342(54)#

300# ms >300 ns

β-

154Pr

0+

155Ce

154.94804(64)#

200# ms >300 ns

β-

155Pr

5/2-#

156Ce

155.95126(64)#

150# ms

β-

156Pr

0+

157Ce

156.95634(75)#

50# ms

β-

157Pr

7/2+#

## 參考文獻

- Isotope masses from Ame2003 Atomic Mass Evaluation by G. Audi, A.H. Wapstra, C. Thibault, J. Blachot and O. Bersillon in Nuclear Physics A729 (2003).
- Isotopic compositions and standard atomic masses from Atomic weights of the elements. Review 2000 (IUPAC Technical Report) . Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and Atomic Weights Revised (2005) .
- Half-life, spin, and isomer data selected from these sources. Editing notes on this article's talk page.
- Audi, Bersillon, Blachot, Wapstra. The Nubase2003 evaluation of nuclear and decay properties , Nuc. Phys. A 729, pp. 3-128 (2003).
- National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database (retrieved Sept. 2005).
- David R. Lide (ed.), Norman E. Holden in CRC Handbook of Chemistry and Physics, 85th Edition, online version. CRC Press. Boca Raton, Florida (2005). Section 11, Table of the Isotopes.

## 基本資料

- infobox_name：cerium
- 貨幣符號：Ce
- 日語原文：鈰
- standard atomic weight：140.116(1)