ADOPTED LEVELS, GAMMAS for 28Na
Author: M. Shamsuzzoha Basunia | Citation: Nucl. Data Sheets 114, 1189 (2013) | Cutoff date: 1-Apr-2013
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=14030 keV 10 | S(n)= 3542 keV 11 | S(p)= 15310 keV 70 | Q(α)= -10970 keV 70 | ||
| Reference: 2012WA38 |
| References: | |||
| A | 28Ne β- decay | B | 29Ne β-n decay |
| C | Coulomb Excitation | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | Final Levels | |
| 0.0 | ABC | 1+ | 30.5 ms 4 % β- = 100 % β-n = 0.58 12 | ||||
| 55.2 5 | AB | 55 | 100 | 0.0 | 1+ | ||
| 1131.2 7 | AB | 1076 1131 | 100 14 91 13 | 55.2 0.0 | 1+ | ||
| 1254.2 6 | A C | (2+) | 2 ps 1 | 1200 1255 | 38 6 100 9 | 55.2 0.0 | 1+ |
| 1932.2 7 | A | (1+) | 1877 1932 | 100 17 88 14 | 55.2 0.0 | 1+ | |
| 2118.4 5 | A | (1+) | 864.5 4 2062.9 3 2118 | 28.2 25 100 7 8.6 15 | 1254.2 55.2 0.0 | (2+) 1+ | |
| 2714.3 6 | A | (1+) | 596 782 1583 2659 2714 | 55 7 71 9 100 13 55 11 81 13 | 2118.4 1932.2 1131.2 55.2 0.0 | (1+) (1+) 1+ | |
| 3286.4 12 | A | (1+) | 3231 | 100 | 55.2 | ||
| 3512.5 12 | A | (1+) | 3457 | 100 | 55.2 | ||
E(level): From a least-squares fit to γ-ray energies, ΔEγ=1 keV is assumed by the evaluator where uncertainty not given.
Jπ(level): From 28Ne β- decay feeding assigned in 2006Tr02, except otherwise noted
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 1+ | 30.5 ms 4 % β- = 100 % β-n = 0.58 12 | Q=+0.0395 12, μ=+2.420 2 %β-n from 1974Ro31. |
| 1932.2 | (1+) | Jπ(level): Assigned by the evaluator from log ft values. | |
| 3286.4 | (1+) | Jπ(level): Assigned by the evaluator from log ft values. | |
| 3512.5 | (1+) | Jπ(level): Assigned by the evaluator from log ft values. |
| E(level) | E(gamma) | Comments |
| 1254.2 | 1255 | E(γ): Other: 1240 keV 11 (Coulomb Excitation - 2002Pr12) |
1974Ro31: 28Na was produced from 24-GeV proton spallations on uranium target at CERN, products were trapped in heated graphite, ions produced by surface ionization were accelerated, separated in a magnetic prism, and refocused on an electron multiplier. Deduced half-life and delayed neutron emission probability.
2006FuZX: He(28Na,X), 40Ar primary beam, E=63 MeV/nucleon, fragmented on a C target, reaction products were analyzed by RIKEN projectile fragment separator, identified by energy loss and time-of-flight; 28Na secondary beam, E=40 MeV/nucleon, bombarded a liquid helium target; γ rays were detected by an array consists of 18 sets, each 2 HPGe planer, detectors; reported 5 γ rays associated with 28Na; these are 278.2 keV 6, 405.7 keV 10, 635.9 keV 4, 861.2 keV 12, and 1302.7 keV 23 γ rays. Among these only 861.2γ is reported in other references.
2002Pr12: 197Au(28Na,28Na’γ), 28Na secondary beam, E=43.1 MeV/nucleon, produced from 40Ar primary beam, E=90 MeV/nucleon, fragmentation on a Be target; 28Na secondary beam bombarded a gold target; deduced Coulomb and matter deformation parameters of βc=0.30 7 and βa=0.34 8, respectively, intrinsic quadrupole moment Q0=33 fm2 8 and a B(E2)|^=54 e2fm4 26. Also reported a 1240 keV 11 γ ray, for which the measured cross section is 26 mb 6.
2007No13: 28Na production cross section |J0.01 μb is measured in 40Ar fragmentation via 9Be(40Ar,X), E=90 MeV/nucleon, and 181Ta(40Ar,X), E=94 MeV/nucleon, reactions.
2006Kh08: 28Na beam, E=53.89 MeV/nucleon and 47.10 MeV/nucleon, bombarded a Si target, measured σ=2329 mb 45 and σ=2274 mb 22, respectively, for the Si(28Na,X) reaction and a squared reduced absorption radius of r02=1.210 fm2 10 is deduced and used to study the isospin dependence.