ADOPTED LEVELS, GAMMAS for 40Si
Author: Jun Chen | Citation: Nucl. Data Sheets 140, 1 (2017) | Cutoff date: 30-Sep-2015
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=13.50×103 keV 26 | S(n)= 4.96×103 keV 25 | S(p)= 22860 keV SY | Q(α)= -17.38×103 keV 51 | ||
| Reference: 2012WA38 |
| References: | |||
| A | 1H(40Si,p’γ),1H(42P,xγ) | B | C(44S,40SIAG) |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | Final Levels | |
| 0 | AB | 0+ | 33.0 ms 10 % β- = 100 % β-n = ? % β-2n = ? | |||
| 986 5 | AB | (2+) | 986 5 | 0 | 0+ | |
| 1624 7 ? | AB | (0+,2+,4+) | 638 5 ? | 986 | (2+) | |
| 1831 8 ? | A | 845 6 ? | 986 | (2+) | ||
| 2524 19 ? | B | (4+) | 1539 16 | 986 | (2+) | |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | 0+ | 33.0 ms 10 % β- = 100 % β-n = ? % β-2n = ? | Theoretical %β-n=48.7, %β-2n=0.04 (2003Mo09). |
| 1624 | (0+,2+,4+) | Jπ(level): From shell-model calculations 2012Ta20 suggest that the 2524 level is the first 4+ state and that the 1624 level has Jπ=0 or 2+. They do not rule out the possibility that the 1624 level is the 4+ state; however, they argue that the systematics of E(4+)/E(2+) ratio of neighbouring nuclei favors the first alternative. | |
| 2524 | (4+) | Jπ(level): From shell-model calculations 2012Ta20 suggest that the 2524 level is the first 4+ state and that the 1624 level has Jπ=0 or 2+. They do not rule out the possibility that the 1624 level is the 4+ state; however, they argue that the systematics of E(4+)/E(2+) ratio of neighbouring nuclei favors the first alternative. |
| E(level) | E(gamma) | Comments |
| 986 | 986 | E(γ): 985 11 from 2012Ta20 in C(44S,40Siαγ) |
| 1624 | 638 | E(γ): 629 8 from 2012Ta20 in C(44S,40Siαγ). Weak γ seen only in the pn removal reaction from 42P (2006Ca26) |
| 1831 | 845 | E(γ): Weak γ seen only in the pn removal reaction from 42P (2006Ca26) |
| 2524 | 1539 | E(γ): from 2012Ta20 in C(44S,40Siαγ) |
First identification of 40Si nuclide by 1989Gu03.
1989Gu03: 40Si produced and identified in 181Ta(48Ca,X) reaction at 55 MeV/nucleon
2004Gr20 (also 2004Gr28,2003Gr22): 40Si produced by fragmentation of 48Ca beam at 60 MeV/nucleon with a 9Be target followed by separation of fragments by LISE3 spectrometer; measured β, γ, T1/2
2006Kh08: Si(40Si,X) E=30-65 MeV. Measured cross section, deduced radius and isospin dependence. Measured <r02>=1.21 fm2 6
Mass measurement: 2007Ju03, 2000Sa21 (also 2001Sa72)
Structure calculations: 2014Ca21 (energies and B(E2) of first 2+ state), 2014Eb02 (low-lying electric dipole strengths of PDR, deformation), 2013Ha27 (deformation, binding energy), 2013Xu01 (binding energy, S(2n), S(2p), rms charge, moment)
Q-value: Δ(S(n))=550 (syst,2012Wa38)
Q-value: S(2n)=6543 240, S(2p)=43220 550 (syst), Q(β-n)=10190 250, (2012Wa38)