ADOPTED LEVELS for 138Sb
Author: Jun Chen | Citation: Nucl. Data Sheets 146, 1 (2017) | Cutoff date: 30-Sep-2017
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=11.5×103 keV 11 | S(n)= 2.2×103 keV 11 | S(p)= 11720 keV SY | Q(α)= -4990 keV SY | ||
| Reference: 2017WA10 |
| E(level) (keV) | Jπ(level) | T1/2(level) |
| 0 | (3-) | 348 ms 15 % β- = ? % β-n = 72 8 % β-2n = ? |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | (3-) | 348 ms 15 % β- = ? % β-n = 72 8 % β-2n = ? | Theoretical %β-n=37.3, %β-2n=30.5 (2003Mo09). |
First identification of 138Sb nuclide by 1994Be24 via 208Pb(U,f) (See 2013Ka01)
2015Le14: Source of 138Sb was produced by in-flight fission of 238U on a 9Be target at E=345 MeV/nucleon at the Radioactive Isotope Beam Factory (RIBF) at the RIKEN Nishina Center. Fragments were separated by the BigRIPS separator and identified through a zero-degree spectrometer (ZDS) based on the Bρ-ΔE-tof method. Separated and selected ions were implanted into a wide-range active-silicon-strip stopper array for β and ion detector (WAS3ABi), consisting of five layers of 1-mm-thick double-sided silicon-strip detectors (DSSSDs), surrounded by two 2-mm-thick plastic scintillators. γ rays were detected by the EUROBALL-RIKEN HPGe cluster array (EURICA). Measured βγ(t), β-decay feedings. Deduced ground state half-life, J, π. Comparisons with shell-model calculations. Energy systematics of Te isotopes.
2011Ar18: 138Sb ions was prepared by bombardment of UCx target with 1 GeV protons followed by selective ionization with the Resonance Ionization Laser Ion Source (RILIS) and high-resolution mass separator at ISOLDE-CERN facility. Measured delayed neutrons to deduce half-life and Pn (delayed neutron emission probability). Comparison with calculations for spherical and nonspherical shapes. The new data incorporated in nucleosynthesis calculations of the r process.
1998Do08,1994Be24: identified in 208Pb(238U,f), E=750 MeV/nucleon, using the FRS fragment mass separator.
Mass measurement: 2016Kn03
Theoretical nuclear structure calculations:
2011Iz02: calculated β-delayed fission, β-transition strength functions.
2008Ga15: calculated change in decay-rate for decays to bound states and continuum
2007Ot03: calculated proton single-particle level energies.
2017Ko24, 2007Ma09, 2005Ni02, 2003Bo06: calculated β-decay half-life.
Q-value: ΔS(p)=1140, ΔQ(α)=1110 (2017Wa10)
Q-value: S(2n)=5860 1060, S(2p)=28290 1140 (syst), Q(β-n)=7010 1060, Q(2β+)=17760 1060 (2017Wa10)