ADOPTED LEVELS for 71Co

Authors: Khalifeh Abusaleem, Balraj Singh |  Citation: Nucl. Data Sheets 112, 133 (2011) |  Cutoff date: 30-Nov-2010 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=1.10×104 keV 5S(n)= 5.5×103 keV 6S(p)= 1.53×104 keV SYQ(α)= -1.35×104 keV SY
Reference: 2012WA38

General Comments:

1992We04: 71Co produced and identified by fragmentation of 500 MeV/nucleon 86Kr beam incident on a beryllium target followed by mass separation in a magnetic spectrometer using in addition time-of- flight and energy loss measurements for nuclide identification. Measured production cross section.

1998Am04 (also 1997AmZZ thesis): 71Co produced in the fragmentation of 86Kr beam at 500 MeV/nucleon with 9Be target at GSI facility. Fragment recoil separator used to separate fragments. Magnetic rigidity and time-of-flight method used to identify the isotope. Measured half-life

2004Sa59 (also 2002MaZN thesis): 71Co produced in the fragmentation of 86Kr beam at 57.8 MeV/nucleon with 181Ta target at ganil facility. Lise2000 spectrometer was used to separate fragments. Magnetic rigidity and time-of-flight method used to identify the isotope. Measured γ rays, βγ coin, half-life

2005GaZR thesis (also 2003So21 conference article): 71Co produced in the fragmentation of 76Ge beam at 61.8 MeV/nucleon with 58Ni target at ganil facility. Lise3 spectrometer was used to separate fragments. Magnetic rigidity and time-of-flight method used to identify the isotope. Measured β, half-life

2010RaZY (also 2005Ma95): 71Co produced in the fragmentation of 86Kr beam at 140 MeV/nucleon with a 9Be target, followed by separation using A1900 FRS at NSCL facility. Time-of-flight and E-ΔE used to identify fragments. Detected β and γ radiation. Measured half-life.

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

Q-value: Δ(S(p))=1030, Δ(Q(α))=980 (2009AuZZ,2003Au03)

Q-value: S(2n)=10010 900, s(2p)=33150 1160 (syst), Q(β-n)=7210 910 (2009AuZZ,2003Au03)





E(level)
(keV)
Jπ(level) T1/2(level)
  0.0 (7/2-) 80 ms 3 
% β- = 100
% β-n ≤ 6 2

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
  0.0(7/2-) 80 ms 3 
% β- = 100
% β-n ≤ 6 2
-n from estimate of intensity of 1259γ in 70Ni (2010RaZY, 2005Ma95). This γ ray is observed, thus delayed-neutron decay mode does occur. Note that 2005Ma95 stated %β-n|>3 1, which should have read |<3 1.

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