ADOPTED LEVELS, GAMMAS for 251Md
Author: C. Morse | Citation: Nucl. Data Sheets 189, 111 (2023) | Cutoff date: 23-Sep-2022
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=-3882 keV SY | S(n)= 7.50×103 keV 9 | S(p)= 2394 keV 20 | Q(α)= 7963 keV 4 | ||
Reference: 2021WA16 |
References: | |||
A | 255Lr α decay (31.1 S) | B | 255Lr α decay (2.54 S) |
C | 251Md IT decay (1.4 S) | D | 205Tl(48Ca,2nγ) |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | M(γ) | Final Levels | |
0 | ABCD | 7/2- | 4.27 m 11 % α = 10 1 | ||||
54 10 | A D | 1/2- | |||||
61.0 10 | D | 9/2- | 61S | M1(+E2) | 0 | 7/2- | |
94 10 | D | 5/2- | 40S | E2 | 54 | 1/2- | |
133.0 10 | AB D | 11/2- | 133S | E2 | 0 | 7/2- | |
181 10 | D | 9/2- | 87 2 | E2 | 94 | 5/2- | |
222.8 10 | D | 13/2- | 161.8 3 | E2 | 61.0 | 9/2- | |
322.0 12 | D | 15/2- | 189.0 7 | E2 | 133.0 | 11/2- | |
325 10 | D | 13/2- | 144 2 | E2 | 181 | 9/2- | |
437.6 12 | D | 17/2- | 214.8 5 | E2 | 222.8 | 13/2- | |
520 10 | D | 17/2- | 195.4 2 | E2 | 325 | 13/2- | |
560.8 13 | D | 19/2- | 238.8 4 | E2 | 322.0 | 15/2- | |
701.4 12 | D | 21/2- | 263.8 3 | E2 | 437.6 | 17/2- | |
765 10 | D | 21/2- | 244.7 3 | E2 | 520 | 17/2- | |
≥844 | C | (23/2+) | 1.4 s 3 % IT = 100 AP | ||||
849.8 16 | D | 23/2- | 289 1 | E2 | 560.8 | 19/2- | |
1012.6 13 | D | 25/2- | 311.2 6 | E2 | 701.4 | 21/2- | |
1057 10 | D | 25/2- | 291.7 2 | E2 | 765 | 21/2- | |
1183.8 19 | D | 27/2- | 334 1 | E2 | 849.8 | 23/2- | |
1370.6 17 | D | 29/2- | 358 1 | E2 | 1012.6 | 25/2- | |
1393 10 | D | 29/2- | 336.0 2 | E2 | 1057 | 25/2- | |
1559.8 22 | D | 31/2- | 376 1 | E2 | 1183.8 | 27/2- | |
1770 10 | D | 33/2- | 376.8 2 | E2 | 1393 | 29/2- | |
2185 10 | D | 37/2- | 415.1 4 | E2 | 1770 | 33/2- | |
2634 11 | D | 41/2- | 449.4 10 | E2 | 2185 | 37/2- | |
3117 11 | D | 45/2- | 483 1 | E2 | 2634 | 41/2- | |
3630 11 | D | 49/2- | 513 1 | E2 | 3117 | 45/2- |
Jπ(level): Based on identification of band-head configurations deduced from favored α decay from 255Lr and identification of the rotational bands built on top of them in 205Tl(48Ca,2nγ), unless noted otherwise.
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | M(γ) | Final Levels | ||
Band 1 - π7/2-[514] | |||||||
0 | 7/2- | 4.27 m 11 % α = 10 1 | |||||
61.0 10 | 9/2- | ||||||
133.0 10 | 11/2- | 133S | E2 | 0 | 7/2- | ||
222.8 10 | 13/2- | 161.8 3 | E2 | 61.0 | 9/2- | ||
322.0 12 | 15/2- | 189.0 7 | E2 | 133.0 | 11/2- | ||
437.6 12 | 17/2- | 214.8 5 | E2 | 222.8 | 13/2- | ||
560.8 13 | 19/2- | 238.8 4 | E2 | 322.0 | 15/2- | ||
701.4 12 | 21/2- | 263.8 3 | E2 | 437.6 | 17/2- | ||
849.8 16 | 23/2- | 289 1 | E2 | 560.8 | 19/2- | ||
1012.6 13 | 25/2- | 311.2 6 | E2 | 701.4 | 21/2- | ||
1183.8 19 | 27/2- | 334 1 | E2 | 849.8 | 23/2- | ||
1370.6 17 | 29/2- | 358 1 | E2 | 1012.6 | 25/2- | ||
1559.8 22 | 31/2- | 376 1 | E2 | 1183.8 | 27/2- | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | M(γ) | Final Levels | ||
Band 2 - π1/2-[521] | |||||||
54 10 | 1/2- | ||||||
94 10 | 5/2- | ||||||
181 10 | 9/2- | 87 2 | E2 | 94 | 5/2- | ||
325 10 | 13/2- | 144 2 | E2 | 181 | 9/2- | ||
520 10 | 17/2- | 195.4 2 | E2 | 325 | 13/2- | ||
765 10 | 21/2- | 244.7 3 | E2 | 520 | 17/2- | ||
1057 10 | 25/2- | 291.7 2 | E2 | 765 | 21/2- | ||
1393 10 | 29/2- | 336.0 2 | E2 | 1057 | 25/2- | ||
1770 10 | 33/2- | 376.8 2 | E2 | 1393 | 29/2- | ||
2185 10 | 37/2- | 415.1 4 | E2 | 1770 | 33/2- | ||
2634 11 | 41/2- | 449.4 10 | E2 | 2185 | 37/2- | ||
3117 11 | 45/2- | 483 1 | E2 | 2634 | 41/2- | ||
3630 11 | 49/2- | 513 1 | E2 | 3117 | 45/2- |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0 | 7/2- | 4.27 m 11 % α = 10 1 | CONF=|p7/2-[514] E(level): π7/2-[514]. |
54 | 1/2- | CONF=|p1/2-[521] E(level): π1/2-[521]. | |
61.0 | 9/2- | E(level): π7/2-[514]. | |
94 | 5/2- | E(level): π1/2-[521]. | |
133.0 | 11/2- | E(level): π7/2-[514]. | |
181 | 9/2- | E(level): π1/2-[521]. | |
222.8 | 13/2- | E(level): π7/2-[514]. | |
322.0 | 15/2- | E(level): π7/2-[514]. | |
325 | 13/2- | E(level): π1/2-[521]. | |
437.6 | 17/2- | E(level): π7/2-[514]. | |
520 | 17/2- | E(level): π1/2-[521]. | |
560.8 | 19/2- | E(level): π7/2-[514]. | |
701.4 | 21/2- | E(level): π7/2-[514]. | |
765 | 21/2- | E(level): π1/2-[521]. | |
849.8 | 23/2- | E(level): π7/2-[514]. | |
1012.6 | 25/2- | E(level): π7/2-[514]. | |
1057 | 25/2- | E(level): π1/2-[521]. | |
1183.8 | 27/2- | E(level): π7/2-[514]. | |
1370.6 | 29/2- | E(level): π7/2-[514]. | |
1393 | 29/2- | E(level): π1/2-[521]. | |
1559.8 | 31/2- | E(level): π7/2-[514]. | |
1770 | 33/2- | E(level): π1/2-[521]. | |
2185 | 37/2- | E(level): π1/2-[521]. | |
2634 | 41/2- | E(level): π1/2-[521]. | |
3117 | 45/2- | E(level): π1/2-[521]. | |
E(level) | Jπ(level) | T1/2(level) | Comments |
3630 | 49/2- | E(level): π1/2-[521]. |
$ 2018It04: Mass measurement.
Q-value: ΔQ(β-)=182 (2021Wa16)
Q-value: S(2n)=14360 17, S(2p)=6786 syst 36 (2021Wa16)