ADOPTED LEVELS, GAMMAS for 49Fe

Author: T. W. Burrows |  Citation: Nucl. Data Sheets 109, 1879 (2008) |  Cutoff date: 14-Jul-2008 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-1.44×104 keV SYS(n)= 1.44×104 keV SYS(p)= 2.72×103 keV 17Q(α)= -7.66×103 keV 5
Reference: 2012WA38

References:
  A  50Ni β+p decay: PARTIAL 

General Comments:

1970Ce02: E(12C)=65 MeV. Measured excitation function and delayed proton activity of 49Mn, presumably following β+ decay of 49Fe; ΔE-E telescope. θ=25|’. 1.3|<E(p)|>5.7 MeV. Identification based on excitation function and systematics.

1996Fa09: E(58Ni)=650 MeV/nucleon. Measured projectile-like fragments at 0|’, fragment recoil separator; mag spect, ΔE/E counter telescope (Si), tof.

2005LiZX: 12C(40Ca,3nγ) E=230 MeV. Measured γ’s and (recoil)γ-coin; FMA stand-alone experiment with one clover γ-ray detector at 90|’ to the beam direction. FMA focal-plane detectors consisted of micro-channel plate detectors for determination of position and ionization chamber for Z-identification through energy loss and total energy of the recoils. Test experiment to investigate if a study of 49Fe spectroscopy is feasible. Appear feasible with a full seven day GAMMASPHERE-FMA experiment.

2007Do17: Ni(58Ni,X) E=74.5 MeV/nucleon. α-LISE3 fragment separator. Fragment identification by energy loss, residual energy and tof 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. γ’s detected by four Ge detectors. Coincidences measured between charged particles and γ’s. T1/2 measured by time correlation of implantation events due to 49Fe and subsequent emission of protons and γ’s.

Others: 1987Ki14, 2002Pf02, and 2002Pf03.

Levels: See β+p decay for Jπ’s not adopted by evaluator

Gammas: All data are from β+p decay. Ordering of the 63-90 γ cascade is not established.

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

Q-value: Q(β+p)=10864 keV 18 from Δ’ (49Fe)=-24666 keV 16 (2007Do17) and Δ’ (48Cr)=-42819 keV 7 and Δ’ (1H)=7299 keV (2003Au03). Other: 10950 keV 150 (2003Au03. Systematics).








E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
Final Levels
    0.0A (7/2-) 64.7 ms 3 
% ε = 100
% β+p = 56.7 4
   
   90.0 10 ?A     90 1 ?
    0.0
(7/2-)
  153.0 15 ?A     63 1 ?
   90.0

E(level): From least-squares fit to Eγ’s. Ordering of the 63-90 γ cascade is not established.

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments

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