ADOPTED LEVELS for 48Ni

Author: Jun Chen |  Citation: Nucl. Data Sheets 179, 1 (2022) |  Cutoff date: 30-Nov-2021 

 Full ENSDF file | Adopted Levels (PDF version) 


S(p)= -270 keV SY
Reference: 2021WA16

General Comments:

2014Po05 (also 2011Po09,2012Po03): 48Ni ions were produced at NSCL by fragmentation of a E=160 MeV/nucleon 58Ni beam impinging on a 580 mg/cm2 thick natural nickel target. Products were selected by the A1900 fragment separator and identified by time of flight and energy loss information then slowed in an aluminum foil and stopped in the active volume of the optical time-projection chamber (OTPC) which was filled with a mixture of He, Ar, and n gases and used to track charged particles. Measured reaction products, half-life, E(p), production σ, proton energy distribution. Deduced T1/2, proton emission probabilities, Q(2p).

2005Do20: Ni(58Ni,X) E=74.5 MeV/nucleon. Measured projectile fragments (SISSI-LISE3 facility at GANIL; 50 μm thick Be degrader in intermediate focal plane, two microchannel plate detectors in first focal plane and four Si detectors at end of LISE3 beam line; tof). Four implantation events recorded; all correlated with subsequent decay events. See 2005Bl31 and 2005Gi15 for preliminary results.

2002Ch28,2001Gi02,2000Bl01: Ni(58Ni,X) E=74.5 MeV/nucleon. Measured projectile fragments (SISSI; LISE3 separator; 5 Si detectors; tof). 4 events for 48Ni; σ=0.05 pb 2. See also 2000BlZZ.

Others: 2003Ba99 calculated two-proton decay widths. 2003Br07 calculated T1/2(2p) and compared to data. 2003Gr24 calculated T1/2(2p) vs decay energy. 2004Pf02 compiled theoretical Q’s and T1/2(2p)’s. 2005Pf01 compiled two-proton decay data and theory. 2004Bb14 calculated 2p spectroscopic factors.

48Ni decays to 46Fe by 2p decay and to 47Fe by β+p decay

Q-value: ΔS(p)=740 (syst,2021Wa16). Other: 505 keV 351 calculated by 1997Or04.

Q-value: S(2p)=-2390 300, Q(εp)=18020 660 (syst,2021Wa16). Others: one possible 2p decay with decay energy of 1.35 MeV 2 reported by 2005Do20; 1.29 MeV 4 from 2014Po05; 1.29 MeV 33 calculated by 1997Or04.





E(level)
(keV)
Jπ(level) T1/2(level)
  0 0+ 2.1 ms +14-6 
% 2p = 70 20
% β+p = 30 20

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
  00+ 2.1 ms +14-6 
% 2p = 70 20
% β+p = 30 20
Decay modes from observation of two events decaying by β+p decay and four by proton decay (2011Po09). 2005Do20 report one event with decay energy of 1.35 MeV 2 with no β coincident consistent with model predictions for 2p decay, which happens after 1.66 ms and is followed by charged-particle emission with an energy release of 4748 keV 20 after 1.03 ms.
E(level): Decay modes from observation of two events decaying by β+p decay and four by proton decay (2011Po09). 2005Do20 report one event with decay energy of 1.35 MeV 2 with no β coincident consistent with model predictions for 2p decay, which happens after 1.66 ms and is followed by charged-particle emission with an energy release of 4748 keV 20 after 1.03 ms.

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