ADOPTED LEVELS, GAMMAS for 38Si
Author: Jun Chen | Citation: Nucl. Data Sheets 152, 1 (2018) | Cutoff date: 30-Sep-2017
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=1.045×104 keV 13 | S(n)= 5.67×103 keV 15 | S(p)= 2.127×104 keV 21 | Q(α)= -1.492×104 keV 11 | ||
Reference: 2017WA10 |
References: | |||
A | 38Al β- decay | B | 1H(38Si,38Si’γ) |
C | C(40S,38SI2PG) | D | Coulomb Excitation |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | Final Levels | |
0 | ABCD | 0+ | 63 ms 8 % β- = 100 % β-n = 25 10 | ||||
1074 2 | ABCD | 2+ | 10 ps +6-3 | 1074 2 | 100 | 0 | 0+ |
2233 3 | A C | (4+) | 1159 2 | 100 | 1074 | 2+ | |
2355 29 ? | C | (4+) | 1284 26 ? | 100 | 1074 | 2+ | |
3285 3 | A | (3) | 2211 2 | 100 | 1074 | 2+ | |
3656? | A | (1-) | 3656? | 100 | 0 | 0+ | |
3703 3 | A | (4+) | 418 2 1470 2 | 76 12 100 12 | 3285 2233 | (3) (4+) |
E(level): From a least-squares fit to γ-ray energies.
Jπ(level): From shell-model predictions in 38Al β- decay (2015St14), unless otherwise noted.
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0 | 0+ | 63 ms 8 % β- = 100 % β-n = 25 10 | Calculated %β-n=36 (2003Mo09), %β-n=9.8 (2016Ma12). |
1074 | 2+ | 10 ps +6-3 | B(E2)=0.019 7 (1998Ib01), β2=0.35 +2-3 (2007Ca35) β2 from 1H(38Si,38Si’γ) (2007Ca35), deduced for vibrational model. Others: 0.34 +2-3 (prolate rotational model), 0.38 3 (oblate rotational model). Sign of β2 is not given in 2007Ca35. E(level): β2 from 1H(38Si,38Si’γ) (2007Ca35), deduced for vibrational model. Others: 0.34 +2-3 (prolate rotational model), 0.38 3 (oblate rotational model). Sign of β2 is not given in 2007Ca35. |
E(level) | E(gamma) | Comments |
1074 | 1074 | E(γ): others: 1084 20 in Coulomb excitation, 1071 12 in (40S,38Si2pγ) |
2233 | 1159 | E(γ): other: 1168 22 in (40S,38Si2pγ) |
2355 | 1284 | E(γ): from (40S,38Si2pγ) only, very weak |
38Si first produced and identified by 1979We10 in 9Be(48Ca,X) reaction at 212 MeV/nucleon
Other measurements:
2017Tr02: 9Be(48Ca,X) E=140 MeV/nucleon at NSCL. Measured T1/2, %β-n.
1999YoZW: 181Ta(48Ca,X) E=70 MeV/nucleon. Measured T1/2, %β-n (tentative results)
1991Zh24: Th(p,X) E(p)=800 MeV followed. Measured fragment mass, charge state ratio, velocity
2006Kh08: Si(38Si,X) E=30-65 MeV/nucleon at GANIL. Measured σ. Deduced reduced strong absorption radius=1.20 fm2 3.
Mass measurements: 2007Ju03, 2001Sa72 (also 2000Sa21), 1991Zh24
Consult NSR database for about 20 theory references.
Q-value: S(2n)=7880 130, S(2p)=39130 700, Q(β-n)=6750 110 (2017Wa10)