ADOPTED LEVELS for 38Al
Author: Jun Chen | Citation: Nucl. Data Sheets 152, 1 (2018) | Cutoff date: 30-Sep-2017
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=20.38×103 keV 39 | S(n)= 1.67×103 keV 42 | S(p)= 19.3×103 keV 8 | Q(α)= -17.9×103 keV 7 | ||
| Reference: 2017Wa10 |
| References: | |||
| A | 9Be(48Ca,38AlG) | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) |
| 0 | A | (0-) | 9.0 ms 7 % β- = ? % β-n = ? % β-2n = ? |
| 0+X? | A | (5-) | 9.0 ms 7 % β- = ? % β-n = ? % β-2n = ? |
T1/2(level): From β-delayed 418γ(t), 1074γ(t), 1159γ(t) and 1470γ(t) in 38Al β- decay (2015St14). These γ-ray transitions could be from β-decay of 38Al (0-) ground state or (5-) isomer or both and thus the evaluator assigned the measured value of T1/2 to both states. Other: 7.6 ms 6 for g.s. in 2004Gr20.
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | (0-) | 9.0 ms 7 % β- = ? % β-n = ? % β-2n = ? | Calculated %β-n=6.7 and %β-2n=13.2 (2003Mo09), %β-n=76 (2013Li39), %β-n=73.5 and %β-2n=6.7 (2016Ma12). |
| 0+X | (5-) | 9.0 ms 7 % β- = ? % β-n = ? % β-2n = ? | Calculated %β-n=82, T1/2=15.9 ms (2013Li39). |
38Al first produced and identified by 1989Gu03 in 181Ta(48Ca,X) E=55 MeV/nucleon, time-of-flight method.
Other measurements:
1999YoZW: 181Ta(48Ca,X) E=70 MeV/nucleon. Measured T1/2, %β-n (tentative results)
Mass measurements: 2007Ju03, 2001Sa72 (also 2000Sa21)
2006Kh08: Cross section measurement in Si(38Al,X) E=30-65 MeV/nucleon, deduced reduced strong absorption radius=1.21 fm2 11. The 38Al beam obtained from fragmentation of 48Ca beam with 181Ta target at GANIL facility.
Structure calculations: 2016Sa46, 2013Sh05, 2009Co21
Theoretical calculations of T1/2 and Pn: 2016Ma12, 2013Li39, 2003Mo09
Q-value: S(2n)=5880 400, S(2p)=44670 770 (syst), Q(β-n)=14710 390 (2017Wa10)