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 SYS(n)= 7736 keV SYS(p)= 2396 keV 21Q(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) 

General Comments:

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).









E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)Final Levels
     0ABC (7/2-) 4.0 m 5 
% ε ≥ 90
% α ≤ 10
    
   ≈55A C (1/2-)       
    95 Calc.   C (5/2-)      40 Calc. S
  100
    55
(1/2-)
  ≈135AB  (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)

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Band Transitions:

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-)

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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.

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