ADOPTED LEVELS:NOT OBSERVED for 63As
Author: Jun Chen | Citation: Nucl. Data Sheets 196, 17 (2024) | Cutoff date: 30-Sep-2023
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-16650 keV SY | S(n)= 17150 keV SY | S(p)= -1350 keV SY | Q(α)= -2170 keV SY | ||
| Reference: 2021WA16 |
| E(level) (keV) | T1/2(level) |
| 0? | < 43 ns % p = ? |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | < 43 ns % p = ? | No events could be assigned to 63As, implying that 63As is unbound towards proton emission (2005St29). E(level): No events could be assigned to 63As, implying that 63As is unbound towards proton emission (2005St29). |
1991Mo10,1993Wi03,1993Wi18: 58Ni(78Kr,X) at E=65 MeV/nucleon. Identification of new nuclei near proton-drip line 31|<Z|<38 at NSCL. No identification of 63As.
2005St29,2005St34: 9Be(78Kr,X) 63As isotope was searched in fragmentation of 78Kr34+ beam on a 9Be target at E=140 MeV/nucleon. Reaction products selected according to their momentum/charge ratio using the A1900 spectrometer of the National Superconducting Cyclotron Laboratory (NSCL). Measured fragments, tof and energy losses, timing scintillator (SCI), a position-sensitive parallel-plate avalanche counter (PPAC) and three silicon detectors (PIN). Half-life deduced from production yields.
Theoretical calculations:
2021Kl02,2019Zo02,1998Ra28: calculated mass excess, S(p), S(2p)
2016Me17: calculated magnetic dipole moment of ground state
2002La37,2001La01: calculated S(p), deformation parameter
1997Or04: calculated binding energy
Q-value: ΔQ(β-)=540, ΔS(n)=360, ΔS(p)=240, ΔQ(α)=260 (syst,2021Wa16)
Q-value: S(2n)=32440 360, S(2p)=940 200, Q(εp)=11200 200 (syst,2021Wa16)