ADOPTED LEVELS for 57Sc

Author: Balraj Singh |  Citation: ENSDF |  Cutoff date: 12-APR-2010 

Author: M. R. Bhat |  Citation: Nucl. Data Sheets 85, 415 (1998) |  Cutoff date: 24-Sep-1998 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=1.32×104 keV SYS(n)= 4.0×103 keV SYS(p)= 1.41×104 keV SYQ(α)= -1.15×104 keV SY
Reference: 2012WA38

General Comments:

1997Be70: 57Sc activity produced by fragmentation of 750 MeV/nucleon beam of 238U on a 9Be target and subsequent mass separation in the FRS spectrometer at GSI facility. Determined production cross section for 57Sc.

2005Ga01, 1999So20 (also 2003So21, 2005GaZR thesis): 57Sc produced in fragmentation of 76Ge30+ beam on a 58Ni target. LISE3 achromatic spectrometer used to separate fragments with magnetic rigidity tuned to optimize transmission of 62V and 64Cr fragments. Transmitted nuclei were identified by three Si detectors where two served for energy loss and time-of-flight measurements while the others determined their residual energies. Measured Eγ, Iγ, Iβ, γγ, βγ coin, γ(t), lifetimes with four Ge detectors placed around a thick Si telescope. Half-lives determined by fitting procedure involving five parameters: half-lives of mother, daughter and grand-daughter nuclei, the β-efficiency and the background rate over the 1 s collecting time.

2009Cr02, 2008Ma01: production of 57Sc in fragmentation of 130-140 MeV/nucleon 76Ge beam with 9Be target at NSCL facility

Q-value: Note: Current evaluation has used the following Q record

Q-value: ΔQ(β-)=830, ΔS(n)=990 1200, ΔS(p)=1140, ΔQ(α)=990 (syst,2009AuZZ,2003Au03)

Q-value: Q(β-n)=10180 730, S(2n)=7250 1020, S(2p)=35000 1220 (syst,2009AuZZ,2003Au03)




E(level)
(keV)
T1/2(level)
  0 13 ms 4 
% β- = 100
% β-2n = ?
% β-n = ?

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
  0 13 ms 4 
% β- = 100
% β-2n = ?
% β-n = ?
Production cross section determined to be 10 nb, with a systematic error estimated to be 30% (1997Be70).
E(level): Production cross section determined to be 10 nb, with a systematic error estimated to be 30% (1997Be70).

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