Nuclear Data Section
International Atomic Energy Agency
P.O.Box 100, A-1400 Vienna, Austria
Memo CP-D/737
Date:
To:
From:

4 April 2012
Distribution
N. Otsuka

Subject:

Charge and mass conservation in REACTION

I was informed by Sandor Takács that the projectile of the following subentries mustbe alpha particles, or sample target must be tellurium (Z=52):
O1582.002(51-SB-0(D,X)53-I-124,,TTY,,DT)O1582.003(51-SB-0(D,X)53-I-123,,TTY,,DT)O1582.004(51-SB-0(D,X)53-I-125,,TTY,,DT)O1582.005(51-SB-0(D,X)53-I-126,,TTY,,DT)
Because of the charge conservation law, we cannot produce iodine isotopes byirradiation of natSb by deuteron beam at 20 MeV. Finally we found that the article
gives these data sets for alpha-induced reactions.
Motivated by his comment, I searched REACTION satisfying the following conditions:1.

Z fin,tot > Z proj +Z targ
Example (22933.002): (43-TC-99(N,X)44-RU-100,,SIG)
Note that this is allowed above the meson production threshold.

2.

Z fin,tot ≠ Z proj +Z targ (for REACTION specifying all particles/nuclides in SF3SF4)
Example (10375.002): (82-PB-0(N,EL)92-U-0,,DA)3.

A fin,tot > A proj +A targ
Example (A0468.002.5):(24-CR-50(A,X)25-MN-56,,TTY)

A fin,tot ≠ A proj +A targ (for REACTION specifying all particles/nuclides in SF3SF4)
Example (10107.002): (14-SI-0(N,INL)14-SI-28,PAR,DA)
Example (D0164.004): (34-SE-0(P,2N)35-BR-77,,SIG)
where Z fin,tot and A fin,tot are the sums of charge and mass numbers coded in the final
channel. It would be useful if checking programs can perform a similar test.
4.

A list is appended for the 1st to 3rd items. I could not analyze all cases for the 4th item,
but two examples above show typical situations. Without checking articles carefully,
it is impossible to know whether data are for a natural sample or enriched sample.

1. The total charge in the final channel exceeds Z proj +Z targ (Subentries indicated with * are not erroneous.)
Subentry
REACTION
Remark
(83-BI-209(N,X)84-PO-210,,SIG,,SPA)
22836.002
SF3: X → G, SF4: 84-PO-210 → 83-BI-210-G(43-TC-99(N,X)44-RU-100,,SIG)
22933.002
Delete this entry. No reaction data given (decay constant)(90-TH-232(N,X)91-PA-233,,SPC)
23058.005
Delete this entry. No reaction data given (delayed gamma intensity)(64-GD-160(N,X)65-TB-161,CUM,SIG,,MXW)
22603.006.1
SF3: X → G, SF4: 65-TB-161 → 64-GD-161, SF5: Delete CUM.
(64-GD-160(N,X)65-TB-161,CUM,SIG,,MXW,DERIV)
22603.006.2
SF3: X → G, SF4: 65-TB-161 → 64-GD-161, SF5: Delete CUM.
(23-V-0(P,X)25-MN-52,CUM,SIG)*A0427.002
Compiled as given in Table 1. Ep=800 MeV*A0461.002.3 (79-AU-197(D,X)81-TL-196-M/G,,SIG/RAT)The compiler mentions the point under COMMENT. Ep=7.3 GeV(53-I-127(P,X)55-CS-127,,SIG)
C0347.019
DATA → DATA-MAX(1-H-1(KN,X)1-KP-0,,DA/DP)*J1484.007
Compiled as given in Fig.5. p K- = 1.65 GeV/c(29-CU-0(PIN,X)29-CU-61,CUM,SIG)
O0418.026
SF5: CUM → IND (E π ->50 MeV)
(29-CU-0(P,X)31-GA-65,,SIG)*O0542.054
The compiler mentions the point under COMMENT. Ep=3.9 GeV(29-CU-0(P,X)31-GA-66,,SIG)*O0542.055
The compiler mentions the point under COMMENT. Ep=3.9 GeV(29-CU-0(P,X)32-GE-69,,SIG)*O0542.056
The compiler mentions the point under COMMENT. Ep=3.9 GeV(51-SB-0(D,X)53-I-124,,TTY,,DT)O1582.002
SF2: D → A(51-SB-0(D,X)53-I-123,,TTY,,DT)O1582.003
SF2: D → A(51-SB-0(D,X)53-I-125,,TTY,,DT)O1582.004
SF2: D → A(51-SB-0(D,X)53-I-126,,TTY,,DT)O1582.005
SF2: D → A*O1665.003.2 (90-TH-232(P,X)92-U-230,,TTY,,DT,CALC)
Yield derived from 230Pa yield. Is this allowed?
2. The total charge in the final channel is not equal to Z proj +Z targ
Subentry
REACTION(82-PB-0(N,EL)92-U-0,,DA)10375.002(74-W-0(N,EL)56-BA-0,,DA)
11321.010(18-AR-40(PIP,5P)13-AL-35,,SIG)
O1117.002(18-AR-40(PIP,6P)12-MG-34,,SIG)
O1117.012

Remark
SF4: 92-U-0 → 82-PB-0
SF4: 56-BA-0 → 74-W-0
SF4: 13-AL-35 → 14-SI-35 ?
SF4: 12-MG-34 → 13-AL-34 ?

3. Sum of mass numbers in the final channel exceeds A proj +A targ
Subentry
REACTION
A0468.002.5 (24-CR-50(A,X)25-MN-56,,TTY)(52-TE-124(D,X)53-I-131,,TTY,,DT)O1582.013

Remark
Impossible reaction. Contribution of another Cr target isotope?
Impossible reaction. Contribution of another Te target isotope?