ADOPTED LEVELS, GAMMAS for 117Cs
Author: Jean Blachot | Citation: ENSDF | Cutoff date: 1-Mar-2009
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=-8.87×103 keV 21 | S(n)= 1.250×104 keV SY | S(p)= 7.4×102 keV 7 | Q(α)= 2.20×103 keV 7 | ||
Reference: 2012WA38 |
References: | |||
A | 117Ba β+ decay | B | (HI,xnγ) |
C | 58Ni(64Zn,αpγ) |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
0 | A C | (9/2+) | 8.4 s 6 % ε = 100 | |||||
0+X | BC | (11/2-) | ||||||
0+Z | A C | (3/2+) | 6.5 s 4 % ε > 0 | |||||
231.1 2 | C | (11/2+) | 230.8 3 | 100 | M1,E2 | 0 | (9/2+) | |
306.1+X 3 | BC | (15/2-) | 306.1 3 | 100 | E2 | 0+X | (11/2-) | |
345.2 3 | C | (7/2+) | 195.2 3 | 100 | E2 | 0+Z | (3/2+) | |
489.4 2 | C | (13/2+) | 257.8 3 489.7 3 | 100 17 1 | M1,E2 E2 | 231.1 0 | (11/2+) (9/2+) | |
772.2 3 | C | (15/2+) | 283.1 3 541.2 3 | 53 4 13 1 | M1,E2 E2 | 489.4 231.1 | (13/2+) (11/2+) | |
780.8 5 | C | (11/2+) | 435.6 3 | 31 1 | E2 | 345.2 | (7/2+) | |
800.9+X 5 | BC | (19/2-) | 494.8 3 | 125 20 | E2 | 306.1+X | (15/2-) | |
1077.9 3 | C | (17/2+) | 305.8 3 588.2 3 | 40 15 25 2 | M1,E2 E2 | 772.2 489.4 | (15/2+) (13/2+) | |
1337.3 6 | C | (15/2+) | 556.5 3 | 28 1 | E2 | 780.8 | (11/2+) | |
1404.3 4 | C | (19/2+) | 326.1 3 632.3 3 | 100 2 100 2 | M1,E2 E2 | 1077.9 772.2 | (17/2+) (15/2+) | |
1427.8+X 6 | BC | (23/2-) | 626.9 3 | 100 7 | E2 | 800.9+X | (19/2-) | |
1747.0 4 | C | (21/2+) | 343.2 3 669.2 3 | 27 2 26 2 | M1,E2 E2 | 1404.3 1077.9 | (19/2+) (17/2+) | |
1903.4 6 | C | (19/2+) | 566.1 3 | 100 | E2 | 1337.3 | (15/2+) | |
2104.6 4 | C | (23/2+) | 357.5 3 699.7 3 | 28 2 26 2 | M1,E2 E2 | 1747.0 1404.3 | (21/2+) (19/2+) | |
2150.6+X 6 | BC | (27/2-) | 722.8 3 | 100 | E2 | 1427.8+X | (23/2-) | |
2453.0 7 | C | (23/2+) | 549.6 3 | 100 | E2 | 1903.4 | (19/2+) | |
2473.7 5 | C | (25/2+) | 368.7 3 727.2 3 | 19 1 31 2 | M1,E2 E2 | 2104.6 1747.0 | (23/2+) (21/2+) | |
2852.1 5 | C | (27/2+) | 378.5 3 747.4 3 | 15 1 29 2 | M1,E2 E2 | 2473.7 2104.6 | (25/2+) (23/2+) | |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
2946.3+X 7 | C | (31/2-) | 795.7 3 | 100 | E2 | 2150.6+X | (27/2-) | |
3069.3 8 | C | (27/2+) | 616.3 3 | 100 | E2 | 2453.0 | (23/2+) | |
3238.6 5 | C | (29/2+) | 385.9 3 765.1 3 | 14 1 22 2 | M1,E2 E2 | 2852.1 2473.7 | (27/2+) (25/2+) | |
3635.2 5 | C | (31/2+) | 396.5 3 783.5 3 | 11 1 25 2 | M1,E2 E2 | 3238.6 2852.1 | (29/2+) (27/2+) | |
3781.5 8 | C | (31/2+) | 712.2 3 | 100 | E2 | 3069.3 | (27/2+) | |
3785.5+X 8 | C | (35/2-) | 839.2 3 | 100 | E2 | 2946.3+X | (31/2-) | |
4043.7 5 | C | (33/2+) | 408.8 3 804.8 3 | 8 2 23 2 | M1,E2 E2 | 3635.2 3238.6 | (31/2+) (29/2+) | |
4121+X 1 | C | (35/2-) | 1175 | | E2 | 2946.3+X | (31/2-) | |
4465.2 5 | C | (35/2+) | 421.7 3 829.9 3 | 4 3 22 6 | M1,E2 E2 | 4043.7 3635.2 | (33/2+) (31/2+) | |
4586.3 9 | C | (35/2+) | 804.8 3 | 100 | E2 | 3781.5 | (31/2+) | |
4654.6+X 8 | C | (39/2-) | 869.1 3 | 100 | E2 | 3785.5+X | (35/2-) | |
4904.4 6 | C | (37/2+) | 440.2 3 860.5 3 | 6 2 17 2 | M1,E2 E2 | 4465.2 4043.7 | (35/2+) (33/2+) | |
5230+X 2 | C | (39/2-) | 1109 | 100 | E2 | 4121+X | (35/2-) | |
5336.8 6 | C | (39/2+) | 433.2 3 870.9 3 | 10 5 100 10 | M1,E2 E2 | 4904.4 4465.2 | (37/2+) (35/2+) | |
5468.1 9 | C | (39/2+) | 881.8 3 | 100 | E2 | 4586.3 | (35/2+) | |
5600.5+X 9 | C | (43/2-) | 945.9 3 | 100 | E2 | 4654.6+X | (39/2-) | |
5806 6 | C | (41/2+) | 902.2 3 ? | 100 | E2 | 4904.4 | (37/2+) | |
6258? | C | (43/2+) | 920.8 3 ? | 100 | E2 | 5336.8 | (39/2+) | |
6395.9 10 | C | (43/2+) | 927.8 3 | 100 | E2 | 5468.1 | (39/2+) | |
6638.9+X 9 | C | (47/2-) | 1038.4 3 | 100 | E2 | 5600.5+X | (43/2-) | |
6800.8 7 ? | C | (45/2+) | 994.2 3 ? | 100 | E2 | 5806 | (41/2+) | |
7232.4 7 ? | C | (47/2+) | 974.8 3 ? | 100 | E2 | 6258 | (43/2+) | |
7389.3 10 | C | (47/2+) | 993.4 3 | 100 | E2 | 6395.9 | (43/2+) | |
7768.1+X 10 | C | (51/2-) | 1129.2 3 | 100 | E2 | 6638.9+X | (47/2-) | |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
8416.9 11 | C | (51/2+) | 1027.6 3 | 100 | 7389.3 | (47/2+) | ||
8993.0+X 10 | C | (55/2-) | 1224.9 3 | 100 | E2 | 7768.1+X | (51/2-) | |
9541.2 11 ? | C | (55/2+) | 1124.3 3 ? | 100 | 8416.9 | (51/2+) | ||
10283.2+X 11 | C | (59/2-) | 1290.1 3 | 100 | E2 | 8993.0+X | (55/2-) | |
11633+X 2 | C | (63/2-) | 1350 1 | 100 | E2 | 10283.2+X | (59/2-) | |
12982+X 2 ? | C | (67/2-) | 1349 1 | 100 | E2 | 11633+X | (63/2-) | |
14396+X 2 ? | C | (71/2-) | 1413.9 3 ? | 100 | E2 | 12982+X | (67/2-) |
E(level): From least-squares fit to Eγ’s (by evaluator). From systematics, 9/2+ g.s. and a 3/2+ isomer at 150 100 keV are expected (see 2003Au04).
Jπ(level): From systematics and band assignments (2001Sm01).
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 1 - πh11/2, 1/2-[550] band, α=-1/2. | |||||||
0+X | (11/2-) | ||||||
306.1+X 3 | (15/2-) | ||||||
800.9+X 5 | (19/2-) | ||||||
1427.8+X 6 | (23/2-) | 626.9 3 | 100 7 | E2 | 800.9+X | (19/2-) | |
2150.6+X 6 | (27/2-) | 722.8 3 | 100 | E2 | 1427.8+X | (23/2-) | |
2946.3+X 7 | (31/2-) | 795.7 3 | 100 | E2 | 2150.6+X | (27/2-) | |
3785.5+X 8 | (35/2-) | 839.2 3 | 100 | E2 | 2946.3+X | (31/2-) | |
4654.6+X 8 | (39/2-) | 869.1 3 | 100 | E2 | 3785.5+X | (35/2-) | |
5600.5+X 9 | (43/2-) | 945.9 3 | 100 | E2 | 4654.6+X | (39/2-) | |
6638.9+X 9 | (47/2-) | 1038.4 3 | 100 | E2 | 5600.5+X | (43/2-) | |
7768.1+X 10 | (51/2-) | 1129.2 3 | 100 | E2 | 6638.9+X | (47/2-) | |
8993.0+X 10 | (55/2-) | 1224.9 3 | 100 | E2 | 7768.1+X | (51/2-) | |
10283.2+X 11 | (59/2-) | 1290.1 3 | 100 | E2 | 8993.0+X | (55/2-) | |
11633+X 2 | (63/2-) | 1350 1 | 100 | E2 | 10283.2+X | (59/2-) | |
12982+X 2 | (67/2-) | 1349 1 | 100 | E2 | 11633+X | (63/2-) | |
14396+X 2 | (71/2-) | 1413.9 3 ? | 100 | E2 | 12982+X | (67/2-) | |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 2 - πg7/2/πd5/2, 3/2+[422] or 1/2+[420], α=-1/2. | |||||||
0+Z | (3/2+) | 6.5 s 4 % ε > 0 | |||||
345.2 3 | (7/2+) | ||||||
780.8 5 | (11/2+) | ||||||
1337.3 6 | (15/2+) | 556.5 3 | 28 1 | E2 | 780.8 | (11/2+) | |
1903.4 6 | (19/2+) | 566.1 3 | 100 | E2 | 1337.3 | (15/2+) | |
2453.0 7 | (23/2+) | 549.6 3 | 100 | E2 | 1903.4 | (19/2+) | |
3069.3 8 | (27/2+) | 616.3 3 | 100 | E2 | 2453.0 | (23/2+) | |
3781.5 8 | (31/2+) | 712.2 3 | 100 | E2 | 3069.3 | (27/2+) | |
4586.3 9 | (35/2+) | 804.8 3 | 100 | E2 | 3781.5 | (31/2+) | |
5468.1 9 | (39/2+) | 881.8 3 | 100 | E2 | 4586.3 | (35/2+) | |
6395.9 10 | (43/2+) | 927.8 3 | 100 | E2 | 5468.1 | (39/2+) | |
7389.3 10 | (47/2+) | 993.4 3 | 100 | E2 | 6395.9 | (43/2+) | |
8416.9 11 | (51/2+) | 1027.6 3 | 100 | 7389.3 | (47/2+) | ||
9541.2 11 | (55/2+) | 1124.3 3 ? | 100 | 8416.9 | (51/2+) | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 3 - πg9/2[404]9/2+ band, α=+1/2. | |||||||
0 | (9/2+) | 8.4 s 6 % ε = 100 | |||||
489.4 2 | (13/2+) | ||||||
1077.9 3 | (17/2+) | ||||||
1404.3 4 | (19/2+) | 326.1 3 632.3 3 | 100 2 100 2 | M1,E2 E2 | 1077.9 772.2 | (17/2+) (15/2+) | |
1747.0 4 | (21/2+) | 343.2 3 669.2 3 | 27 2 26 2 | M1,E2 E2 | 1404.3 1077.9 | (19/2+) (17/2+) | |
2104.6 4 | (23/2+) | 357.5 3 699.7 3 | 28 2 26 2 | M1,E2 E2 | 1747.0 1404.3 | (21/2+) (19/2+) | |
2473.7 5 | (25/2+) | 368.7 3 727.2 3 | 19 1 31 2 | M1,E2 E2 | 2104.6 1747.0 | (23/2+) (21/2+) | |
3238.6 5 | (29/2+) | 385.9 3 765.1 3 | 14 1 22 2 | M1,E2 E2 | 2852.1 2473.7 | (27/2+) (25/2+) | |
4043.7 5 | (33/2+) | 408.8 3 804.8 3 | 8 2 23 2 | M1,E2 E2 | 3635.2 3238.6 | (31/2+) (29/2+) | |
4904.4 6 | (37/2+) | 440.2 3 860.5 3 | 6 2 17 2 | M1,E2 E2 | 4465.2 4043.7 | (35/2+) (33/2+) | |
5806 6 | (41/2+) | 902.2 3 ? | 100 | E2 | 4904.4 | (37/2+) | |
6800.8 7 | (45/2+) | 994.2 3 ? | 100 | E2 | 5806 | (41/2+) | |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 4 - π9/2[404] band, α=-1/2. | |||||||
231.1 2 | (11/2+) | ||||||
772.2 3 | (15/2+) | ||||||
2852.1 5 | (27/2+) | ||||||
3635.2 5 | (31/2+) | 396.5 3 783.5 3 | 11 1 25 2 | M1,E2 E2 | 3238.6 2852.1 | (29/2+) (27/2+) | |
4465.2 5 | (35/2+) | 421.7 3 829.9 3 | 4 3 22 6 | M1,E2 E2 | 4043.7 3635.2 | (33/2+) (31/2+) | |
5336.8 6 | (39/2+) | 433.2 3 870.9 3 | 10 5 100 10 | M1,E2 E2 | 4904.4 4465.2 | (37/2+) (35/2+) | |
6258 | (43/2+) | 920.8 3 ? | 100 | E2 | 5336.8 | (39/2+) | |
7232.4 7 | (47/2+) | 974.8 3 ? | 100 | E2 | 6258 | (43/2+) |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0 | (9/2+) | 8.4 s 6 % ε = 100 | E(level): πg9/2[404]9/2+ band, α=+1/2. |
0+X | (11/2-) | E(level): πh11/2, 1/2-[550] band, α=-1/2. | |
0+Z | (3/2+) | 6.5 s 4 % ε > 0 | E(level): πg7/2/πd5/2, 3/2+[422] or 1/2+[420], α=-1/2. |
231.1 | (11/2+) | E(level): π9/2[404] band, α=-1/2. | |
306.1+X | (15/2-) | E(level): πh11/2, 1/2-[550] band, α=-1/2. | |
345.2 | (7/2+) | E(level): πg7/2/πd5/2, 3/2+[422] or 1/2+[420], α=-1/2. | |
489.4 | (13/2+) | E(level): πg9/2[404]9/2+ band, α=+1/2. | |
772.2 | (15/2+) | E(level): π9/2[404] band, α=-1/2. | |
780.8 | (11/2+) | E(level): πg7/2/πd5/2, 3/2+[422] or 1/2+[420], α=-1/2. | |
800.9+X | (19/2-) | E(level): πh11/2, 1/2-[550] band, α=-1/2. | |
1077.9 | (17/2+) | E(level): πg9/2[404]9/2+ band, α=+1/2. | |
1337.3 | (15/2+) | E(level): πg7/2/πd5/2, 3/2+[422] or 1/2+[420], α=-1/2. | |
1404.3 | (19/2+) | E(level): πg9/2[404]9/2+ band, α=+1/2. | |
1427.8+X | (23/2-) | E(level): πh11/2, 1/2-[550] band, α=-1/2. | |
1747.0 | (21/2+) | E(level): πg9/2[404]9/2+ band, α=+1/2. | |
1903.4 | (19/2+) | E(level): πg7/2/πd5/2, 3/2+[422] or 1/2+[420], α=-1/2. | |
2104.6 | (23/2+) | E(level): πg9/2[404]9/2+ band, α=+1/2. | |
2150.6+X | (27/2-) | E(level): πh11/2, 1/2-[550] band, α=-1/2. | |
2453.0 | (23/2+) | E(level): πg7/2/πd5/2, 3/2+[422] or 1/2+[420], α=-1/2. | |
2473.7 | (25/2+) | E(level): πg9/2[404]9/2+ band, α=+1/2. | |
2852.1 | (27/2+) | E(level): π9/2[404] band, α=-1/2. | |
2946.3+X | (31/2-) | E(level): πh11/2, 1/2-[550] band, α=-1/2. | |
3069.3 | (27/2+) | E(level): πg7/2/πd5/2, 3/2+[422] or 1/2+[420], α=-1/2. | |
3238.6 | (29/2+) | E(level): πg9/2[404]9/2+ band, α=+1/2. | |
3635.2 | (31/2+) | E(level): π9/2[404] band, α=-1/2. | |
E(level) | Jπ(level) | T1/2(level) | Comments |
3781.5 | (31/2+) | E(level): πg7/2/πd5/2, 3/2+[422] or 1/2+[420], α=-1/2. | |
3785.5+X | (35/2-) | E(level): πh11/2, 1/2-[550] band, α=-1/2. | |
4043.7 | (33/2+) | E(level): πg9/2[404]9/2+ band, α=+1/2. | |
4465.2 | (35/2+) | E(level): π9/2[404] band, α=-1/2. | |
4586.3 | (35/2+) | E(level): πg7/2/πd5/2, 3/2+[422] or 1/2+[420], α=-1/2. | |
4654.6+X | (39/2-) | E(level): πh11/2, 1/2-[550] band, α=-1/2. | |
4904.4 | (37/2+) | E(level): πg9/2[404]9/2+ band, α=+1/2. | |
5336.8 | (39/2+) | E(level): π9/2[404] band, α=-1/2. | |
5468.1 | (39/2+) | E(level): πg7/2/πd5/2, 3/2+[422] or 1/2+[420], α=-1/2. | |
5600.5+X | (43/2-) | E(level): πh11/2, 1/2-[550] band, α=-1/2. | |
5806 | (41/2+) | E(level): πg9/2[404]9/2+ band, α=+1/2. | |
6258 | (43/2+) | E(level): π9/2[404] band, α=-1/2. | |
6395.9 | (43/2+) | E(level): πg7/2/πd5/2, 3/2+[422] or 1/2+[420], α=-1/2. | |
6638.9+X | (47/2-) | E(level): πh11/2, 1/2-[550] band, α=-1/2. | |
6800.8 | (45/2+) | E(level): πg9/2[404]9/2+ band, α=+1/2. | |
7232.4 | (47/2+) | E(level): π9/2[404] band, α=-1/2. | |
7389.3 | (47/2+) | E(level): πg7/2/πd5/2, 3/2+[422] or 1/2+[420], α=-1/2. | |
7768.1+X | (51/2-) | E(level): πh11/2, 1/2-[550] band, α=-1/2. | |
8416.9 | (51/2+) | E(level): πg7/2/πd5/2, 3/2+[422] or 1/2+[420], α=-1/2. | |
8993.0+X | (55/2-) | E(level): πh11/2, 1/2-[550] band, α=-1/2. | |
9541.2 | (55/2+) | E(level): πg7/2/πd5/2, 3/2+[422] or 1/2+[420], α=-1/2. | |
10283.2+X | (59/2-) | E(level): πh11/2, 1/2-[550] band, α=-1/2. | |
11633+X | (63/2-) | E(level): πh11/2, 1/2-[550] band, α=-1/2. | |
12982+X | (67/2-) | E(level): πh11/2, 1/2-[550] band, α=-1/2. | |
14396+X | (71/2-) | E(level): πh11/2, 1/2-[550] band, α=-1/2. |
600-MeV protons on lanthanum, ms, (1986Ma41,1978Da07,1972Ra16). Two 117Cs isomers could exist from β decay studies as suggested by the discrepancy between half-life measurements. The T1/2=6.5 |+0.4 (1978Da07)was obtained from high-energy part of the positron spectrum
If one assumes: 1. E(b+)>7 MeV events are primarily from one activity, 2.117Ba decay mainly populates the low-spin (3/2+) activity; 3.205 gamma doublet is mainly emitted by the 8.4(6) s activity; then one can assign 6.5(4) s activity to (3/2+) level and 8.4(6) s activity to (9/2+).
Q-value: Note: Current evaluation has used the following Q record -9205 SY12497 SY7.4×102 6 2200 60 2009AuZZ
Q-value: ΔQ(β-)=307, ΔS(n)=118 (2009AuZZ)