ADOPTED LEVELS for 46Fe

Author: Balraj Singh |  Citation: ENSDF |  Cutoff date: 15-FEB-2010 

Author: S. -c. Wu |  Citation: Nucl. Data Sheets 91, 1 (2000) |  Cutoff date: 20-Jul-2000 

 Full ENSDF file | Adopted Levels (PDF version) 


S(n)= 2.09×104 keV SYS(p)= 1.6×103 keV SYQ(α)= -8.1×103 keV SY
Reference: 2012WA38

References:
  A  48Ni 2p decay (2.1 MS):? 

General Comments:

1992Bo37: 46Fe observed from interaction of a 58Ni beam of 69 MeV/u with natural nickel target using magnetic separation, Wien filter and identification through time-of-flight and ΔE-E measurements

1994Bl10: 9Be(58Ni,X) E=650 MeV/nucleon, Fragment separator FRS at GSI facility, measured cross section for the production of 46Fe

2001Gi01 (also 2001Gi02): Ni(58Ni,X) E=74.5 MeV/nucleon. Fragments selected by the α-LISE3 fragment separator with a Be degrader and Wien filter at GANIL. Ions implanted in a Si-detector telescope which measured ΔE, E, and position. With tof measurements, started both by the cyclotrons’ high-frequency and a micro-channel plate detector before the Wien filter, implanted ions could be identified. The telescope was surrounded by Ge detectors to measure γ’s in the radioactive decay.

2007Do17: 46Fe produced in fragmentation of 58Ni26+ beam at 74.5 MeV/nucleon with natural Ni target at SISSE/LISE3 facility in GANIL. Fragment separator=α-LISE3. Fragment identification by energy loss, residual energy and time-of-flight measurements using two micro-channel plate (MCP) detectors and Si detectors. Double-sided silicon-strip detectors (DSSSD) and a thick Si(Li) detector were used to detect implanted events, charged particles and β particles. The γ rays were detected by four Ge detectors. Coincidences measured between charged particles and γ rays. T1/2 measured by time correlation of implantation events due to 46Fe and subsequent emission of protons and/or γ rays. Total proton branching ratio is from time spectrum of events with energy >900 keV in the charged-particle spectrum. Possible small contributions from delayed-α and delayed-2p decays are ignored. 2007Do17 and 2001Go01 are from the same group. Some of the results in 2007Do17 are an improved analysis of experiments reported in 2001Gi01

Mass excess of g.s.=+759 96 (2007Do17), +755 354 (1992Bo37) from IMME analysis

Structure calculations using shell model: 2004Sv04, 2002Ca48, 1999Ca12: levels, B(E2), etc.

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

Q-value: Estimated uncertainties: 420 for S(n), 460 for S(p) and Q(α) (2009AuZZ, 2003Au03).

Q-value: Q(εp)=12430 620 (syst,2009AuZZ,2003Au03), S(2p)=360 360 (syst,2009AuZZ,2003Au03)






E(level)
(keV)
XREFJπ(level) T1/2(level)
  0.0A 0+ 13.0 ms 20 
% ε = 100
% εp = 78.7 38

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
  0.00+ 13.0 ms 20 
% ε = 100
% εp = 78.7 38
XREF: α(?).

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