ADOPTED LEVELS for 49S
Author: Balraj Singh | Citation: ENSDF | Cutoff date: 15-Sep-2023
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-)=19650 keV SY | S(n)= 70 keV SY | S(p)= 24900 keV CA | Q(α)= -19120 keV SY | ||
| Reference: 2021Wa16,2019Mo01 |
| E(level) (keV) | T1/2(level) |
| 0 | % β- = 100 % β-n = ? % β-2n = ? % B-3N = ? % B-4N = ? |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | % β- = 100 % β-n = ? % β-2n = ? % B-3N = ? % B-4N = ? | Only the β- decay mode is expected, followed by delayed neutron decays, thus 100% β- decay is assigned by inference. However, S(n)=70 300 (syst, 2021Wa16) and 30 keV (theory, 2019Mo01) suggests this nuclide on the margin of being stable towards one-neutron emission. E(level): Only the β- decay mode is expected, followed by delayed neutron decays, thus 100% β- decay is assigned by inference. However, S(n)=70 300 (syst, 2021Wa16) and 30 keV (theory, 2019Mo01) suggests this nuclide on the margin of being stable towards one-neutron emission. |
1990Le03: 64Ni(48Ca,X),E(48Ca)=44 MeV/nucleon; measured fragment spectra versus atomic number using LISE spectrometer at GANIL. Authors stated that no counts were observed for 49S.
2018Ta17: 49S formed by fragmentation of 70Zn30+ beam at 345 MeV/nucleon from RIKEN-RIBF accelerator complex. Rotating target of 9Be of 15 mm thickness were located at the BigRIPS two-stage ion separator. Particle identification (PID) was achieved by measuring time of flight (tof), energy loss (ΔE), total kinetic energy (TKE), and magnetic rigidity (Bρ) through event by event analysis of reaction products. Particles of interest were stopped in a 76-mm thick CsI crystal after passing through six 1-mm thick silicon p-i-n diodes, while the magnetic rigidity (Bρ) of the fragments was reconstructed from position and angle measurements at foci using two sets of position-sensitive parallel plate avalanche counters (PPACs). Optimization was done using LISE++ simulation code. α total of five events were assigned to 49S.
Theoretical calculations:
2019Ne02: calculated S(n), S(2n), posterior probability of existence of neutron-rich nuclei using Bayesian model averaging.
2018Yo06: calculated T1/2(β), β-delayed neutron emission probability (Pn), Gamow-Teller (>) strength distribution, and location of the Gamow-Teller giant resonances using large-scale shell-model with and without first-forbidden (FF) transitions.
2012Ho19: calculated point matter, neutron and proton radii, quadrupole deformation parameter using Skyrme-Hartree-Fock approach with SkM* and SLy4 interactions.
Q-value: Estimated uncertainties (2021Wa16): 710 for Q(β-), 300 for S(n), 840 for Q(α).
Q-value: S(p) from 2019Mo01. Q(β-), S(n), Q(α) from 2021Wa16.
Q-value: S(2n)=2950 710, Q(β-n)=16600 770 (syst, 2021Wa16). S(2p)=47650 (2019Mo01, theory). Q(β-2n)=13830 610, Q(β-3n)=9910 590, Q(β-4n)=6370 600, Q(β-5n)=520 590 (syst, deduced by evaluator from relevant mass excesses in 2021Wa16)