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 SY | S(n)= 1.44×104 keV SY | S(p)= 2.72×103 keV 17 | Q(α)= -7.66×103 keV 5 | ||
| Reference: 2012WA38 |
| References: | |||
| A | 50Ni β+p decay: PARTIAL | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | Final Levels | |
| 0.0 | A | (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.
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | 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 -17280 SY14666 55 2.64×103 11 -8121 500 2003Au03,2007Do17
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).