ADOPTED LEVELS, GAMMAS for 251Md
Authors: E. Browne, J. K. Tuli | Citation: Nucl. Data Sheets 114, 1041 (2013) | Cutoff date: 1-Jan-2012
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=-3884 keV SY | S(n)= 7736 keV SY | S(p)= 2396 keV 21 | Q(α)= 7963 keV 5 | ||
Reference: 2012WA38 |
References: | |||
A | 255Lr α decay (31.1 S) | B | 255Lr α decay (2.54 S) |
C | 205Tl(48Ca,2nγ) |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | Final Levels | |
0 | ABC | (7/2-) | 4.0 m 5 % ε ≥ 90 % α ≤ 10 | ||||
≈55 | A C | (1/2-) | |||||
95 Calc. | C | (5/2-) | 40 Calc. S | 100 | 55 | (1/2-) | |
≈135 | AB | (11/2-) | |||||
188 Calc. | C | (9/2-) | 93 Calc. S | 100 | 95 | (5/2-) | |
335 Calc. | C | (13/2-) | 147 Calc. S | 100 | 188 | (9/2-) | |
530.4 3 | C | (17/2-) | 195.4 3 | 100 | 335 | (13/2-) | |
775.3 4 | C | (21/2-) | 244.9 2 | 100 | 530.4 | (17/2-) | |
1067.0 4 | C | (25/2-) | 291.7 2 | 100 | 775.3 | (21/2-) | |
1403.1 5 | C | (29/2-) | 336.1 2 | 100 | 1067.0 | (25/2-) | |
1779.9 5 | C | (33/2-) | 376.8 2 | 100 | 1403.1 | (29/2-) | |
2195.0 6 | C | (37/2-) | 415.1 4 | 100 | 1779.9 | (33/2-) | |
2644.8 10 | C | (41/2-) | 449.8 8 | 100 | 2195.0 | (37/2-) | |
3127.8 14 | C | (45/2-) | 483 1 | 100 | 2644.8 | (41/2-) |
E(level): From 255Lr α decay, unless otherwise noted.
Jπ(level): Based on rotational structure.
E(γ): From 205Tl(48Ca,2nγ)
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | Final Levels | ||
Band 1 - 1/2[521] ROTATIONAL band, α=+1/2 | |||||||
≈55 | (1/2-) | ||||||
95 Calc. | (5/2-) | ||||||
188 Calc. | (9/2-) | 93 Calc. S | 100 | 95 | (5/2-) | ||
335 Calc. | (13/2-) | ||||||
530.4 3 | (17/2-) | 195.4 3 | 100 | 335 | (13/2-) | ||
775.3 4 | (21/2-) | 244.9 2 | 100 | 530.4 | (17/2-) | ||
1067.0 4 | (25/2-) | 291.7 2 | 100 | 775.3 | (21/2-) | ||
1403.1 5 | (29/2-) | 336.1 2 | 100 | 1067.0 | (25/2-) | ||
1779.9 5 | (33/2-) | 376.8 2 | 100 | 1403.1 | (29/2-) | ||
2195.0 6 | (37/2-) | 415.1 4 | 100 | 1779.9 | (33/2-) | ||
2644.8 10 | (41/2-) | 449.8 8 | 100 | 2195.0 | (37/2-) | ||
3127.8 14 | (45/2-) | 483 1 | 100 | 2644.8 | (41/2-) |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0 | (7/2-) | 4.0 m 5 % ε ≥ 90 % α ≤ 10 | Calculated T1/2(SF)≈10 y (1985Lo17). |
55 | (1/2-) | E(level): 1/2[521] ROTATIONAL band, α=+1/2. | |
95 | (5/2-) | E(level): 1/2[521] ROTATIONAL band, α=+1/2. From 205Tl(48Ca,2nγ), based on fixed value of 335 keV for 13/2- level. | |
188 | (9/2-) | E(level): 1/2[521] ROTATIONAL band, α=+1/2. From 205Tl(48Ca,2nγ), based on fixed value of 335 keV for 13/2- level. | |
335 | (13/2-) | E(level): 1/2[521] ROTATIONAL band, α=+1/2. From 205Tl(48Ca,2nγ), based on fixed value of 335 keV for 13/2- level. | |
530.4 | (17/2-) | E(level): 1/2[521] ROTATIONAL band, α=+1/2. From 205Tl(48Ca,2nγ), based on fixed value of 335 keV for 13/2- level. | |
775.3 | (21/2-) | E(level): 1/2[521] ROTATIONAL band, α=+1/2. From 205Tl(48Ca,2nγ), based on fixed value of 335 keV for 13/2- level. | |
1067.0 | (25/2-) | E(level): 1/2[521] ROTATIONAL band, α=+1/2. From 205Tl(48Ca,2nγ), based on fixed value of 335 keV for 13/2- level. | |
1403.1 | (29/2-) | E(level): 1/2[521] ROTATIONAL band, α=+1/2. From 205Tl(48Ca,2nγ), based on fixed value of 335 keV for 13/2- level. | |
1779.9 | (33/2-) | E(level): 1/2[521] ROTATIONAL band, α=+1/2. From 205Tl(48Ca,2nγ), based on fixed value of 335 keV for 13/2- level. | |
2195.0 | (37/2-) | E(level): 1/2[521] ROTATIONAL band, α=+1/2. From 205Tl(48Ca,2nγ), based on fixed value of 335 keV for 13/2- level. | |
2644.8 | (41/2-) | E(level): 1/2[521] ROTATIONAL band, α=+1/2. From 205Tl(48Ca,2nγ), based on fixed value of 335 keV for 13/2- level. | |
3127.8 | (45/2-) | E(level): 1/2[521] ROTATIONAL band, α=+1/2. From 205Tl(48Ca,2nγ), based on fixed value of 335 keV for 13/2- level. |
Calculations, compilation:
Favored α decay: 1993Bu09
Ground state properties: 1997Mo25, 1995Mo29, 2002Lo05, 2001Mo07, 2004Pa40
Single-particle Nilsson levels: 1994Cw02, 2003Be41, 2004Pa40, 2009He02, 2009Ke02
Q(α), T1/2: 2012Po01, 2010Si27, 2010Ad19, 2009Do22, 2008Do12.
1994Cw02 calculated the following single-particle level sequence: g.s. 1/2[521], 0.30 MeV 7/2[514], 0.43 MeV 7/2[633], 0.63 MeV 9/2[624], 0.82 MeV 3/2[521]
Assignment: 243Am(13C,5n), 243Am(12C,4n) (1973Es01).
Q-value: Estimated: ΔQ(β-)=116, ΔS(n)=302 (2012Wa38).