ADOPTED LEVELS, GAMMAS for 35Si
Authors: Lijie Sun and Jun Chen | Citation: Nucl. Data Sheets 211, 1 (2026) | Cutoff date: 30-Sep-2025
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=10470 keV 40 | S(n)= 2470 keV 40 | S(p)= 18680 keV 40 | Q(α)= -13690 keV 40 | ||
| Reference: 2021WA16 |
| References: | |||
| A | 35Al β- decay (38.1 MS) | B | 36Al β-n decay (12.0 MS) |
| C | 37Al β-2n decay (11.4 MS) | D | 2H(34Si,35SiG) |
| E | 9Be(36Si,35SiG) | F | 208Pb(36S,35SiG) |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0 | ABCDEF | (7/2)- | 0.78 s 12 % β- = 100 % β-n < 5 | |||||
| 909.95 23 | ABCDEF | (3/2)- | 55 ps 14 | 910.11 30 | 100 | [E2] | 0 | (7/2)- |
| 973.88 18 | A EF | (3/2+) | 5.9 ns 6 | 64.1 3 973.78 20 | 100 11.8 24 | [E1] [M2] | 909.95 0 | (3/2)- (7/2)- |
| 1689.4 28 | E | 1/2+ | 715 4 780 4 | 14.6 16 100 8 | 973.88 909.95 | (3/2+) (3/2)- | ||
| 1970 6 | E | 1970 6 | 100 | 0 | (7/2)- | |||
| 2044 5 | DE | (1/2)- | 1134 5 | 100 | 909.95 | (3/2)- | ||
| 2168.2 4 | A E | (5/2+) | 1194.2 4 2168.2 6 | 35 8 100 20 | 973.88 0 | (3/2+) (7/2)- | ||
| 2275 6 | E | 2275 6 | 100 | 0 | (7/2)- | |||
| 2377 7 | E | 2377 7 | 100 | 0 | (7/2)- | |||
| 3140 | A | (3/2+,5/2+,7/2+) | ||||||
| 3450 | A | (3/2+,5/2+,7/2+) | ||||||
| 3611 8 ? | E | 3611 8 ? | 100 | 0 | (7/2)- | |||
| 3770 | A | (3/2+,5/2+,7/2+) | ||||||
| 5190 | A | (3/2+,5/2+,7/2+) | ||||||
| ≈5500 | D | (5/2)- | ||||||
| 5760 | A | (3/2+,5/2+,7/2+) | ||||||
| 6330 | A | (3/2+,5/2+,7/2+) | ||||||
| 7360 | A | (3/2+,5/2+,7/2+) | ||||||
| 7690 | A | (3/2+,5/2+,7/2+) | ||||||
E(level): From a least-squares fit to γ-ray energies for levels connected with γ transitions; from 35Al β--delayed neutron decays for other levels, unless otherwise noted.
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 909.95 | (3/2)- | 55 ps 14 | 910.11 30 | [E2] | 4.13×10-5 | B(E2)(W.u.)=2.4 +8-5, α=4.13E-5 6, α(K)=3.84E-5 5, α(L)=2.74E-6 4, α(M)=1.805E-7 25 |
| 973.88 | (3/2+) | 5.9 ns 6 | 64.1 3 | [E1] | 0.0368 | B(E1)(W.u.)=3.52E-4 +41-34, α=0.0368 8, α(K)=0.0342 7, α(L)=0.00244 5, α(M)=0.0001581 33 |
| (3/2+) | 5.9 ns 6 | 973.78 20 | [M2] | 5.05×10-5 | B(M2)(W.u.)=0.057 +13-12, α=5.05×10-5 7, α(K)=4.69E-5 7, α(L)=3.36E-6 5, α(M)=2.211E-7 31 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | (7/2)- | 0.78 s 12 % β- = 100 % β-n < 5 | μ=(-)1.639 (2007Ne14,2019StZV) Reduced strong absorption radius r20=1.261 fm2 35 from the energy-integrated σ of Si(35Si,X) (2006Kh08) and r20=1.258 fm2 92 from the energy-integrated σ of Si(35Si,X) (1999Ai02). E(level): Reduced strong absorption radius r20=1.261 fm2 35 from the energy-integrated σ of Si(35Si,X) (2006Kh08) and r20=1.258 fm2 92 from the energy-integrated σ of Si(35Si,X) (1999Ai02). |
| 3140 | (3/2+,5/2+,7/2+) | Jπ(level): Possible allowed β- feeding from (5/2)+ parent in 35Al. | |
| 3450 | (3/2+,5/2+,7/2+) | Jπ(level): Possible allowed β- feeding from (5/2)+ parent in 35Al. | |
| 3611 | Level exists assuming that the 3611γ feeds the ground state of 35Si (2014St18). E(level): Level exists assuming that the 3611γ feeds the ground state of 35Si (2014St18). | ||
| 3770 | (3/2+,5/2+,7/2+) | Jπ(level): Possible allowed β- feeding from (5/2)+ parent in 35Al. | |
| 5190 | (3/2+,5/2+,7/2+) | Jπ(level): Possible allowed β- feeding from (5/2)+ parent in 35Al. | |
| 5760 | (3/2+,5/2+,7/2+) | Jπ(level): Possible allowed β- feeding from (5/2)+ parent in 35Al. | |
| 6330 | (3/2+,5/2+,7/2+) | Jπ(level): Possible allowed β- feeding from (5/2)+ parent in 35Al. | |
| 7360 | (3/2+,5/2+,7/2+) | Jπ(level): Possible allowed β- feeding from (5/2)+ parent in 35Al. | |
| 7690 | (3/2+,5/2+,7/2+) | Jπ(level): Possible allowed β- feeding from (5/2)+ parent in 35Al. |
| E(level) | E(gamma) | Comments |
| 909.95 | 910.11 | E(γ): others: 910 3 from 2H(34Si,35Siγ), 908 4 from 9Be(36Si,35Siγ), and 910 from 208Pb(36S,35Siγ). |
| 973.88 | 973.78 | E(γ): other: 974 from 208Pb(36S,35Siγ). |
| 1689.4 | 715 | E(γ): From 9Be(36Si,35Siγ) I(γ): From 9Be(36Si,35Siγ) | 780 | E(γ): From 9Be(36Si,35Siγ) I(γ): From 9Be(36Si,35Siγ) |
| 1970 | 1970 | E(γ): From 9Be(36Si,35Siγ) |
| 2044 | 1134 | E(γ): Other: 1134 6 from 2H(34Si,35Siγ).. From 9Be(36Si,35Siγ) |
| 2168.2 | 2168.2 | E(γ): Other: 2164 6 from 9Be(36Si,35Siγ). |
| 2275 | 2275 | E(γ): From 9Be(36Si,35Siγ) |
| 2377 | 2377 | E(γ): From 9Be(36Si,35Siγ) |
| 3611 | 3611 | E(γ): From 9Be(36Si,35Siγ) |
Isotope discovery (2012Th10): 232Th(40Ar,X) at Dubna (1971Ar32).
35Si production:
2015Mo17: 9Be(40Ar,X) at E(40Ar)=95 MeV/nucleon at RIKEN. Measured angular distributions and transverse momentum distributions of fragments. Deduced formulation for the width of transverse momentum distribution as a function of fragment velocity.
2012Kw02: E(40Ar)=140 MeV/nucleon impinged on 9Be, natural nickel, and 181Ta targets at NSCL. Measured fragmentation cross sections, parallel momentum transfers, and widths. Compared with empirical formula EPAX, and predictions from internuclear cascade and deep inelastic models using Monte Carlo ISABEL-GEMINI and DIT-GEMINI codes.
2012Zh06: 9Be,181Ta(40Ar,X) at E(40Ar)=57 MeV/nucleon at HIRFL. Measured momentum distributions and production cross sections of fragments. Observed competition between projectile fragmentation and other mechanisms. Compared with EPAX, abrasion-ablation, and HIPSE models. Studied target dependence of fragment cross sections.
2007No13: 9Be(40Ar,X) at E(40Ar)=100 MeV/nucleon at RIKEN. Measured fragment momentum distributions and production cross sections.
2006Ro34: 2H(42S,X) at E(42S)=99.8 MeV/nucleon at NSCL. Measured production cross sections.
1997Fo01: 208Pb(37Cl,X) at E(37Cl)=230 MeV at Legnaro. Measured yields.
35Si decay measurements:
1986Du07,1986HuZW,1987DuZU,1988DuZS,1988DuZT: 9Be(40Ar,X) at GANIL. Measured T1/2 and β--delayed γ rays.
2007Ne14: Polarized 35Si from 9Be(36S,X) 1n pickup at GANIL. 35Si g.s. magnetic moment and g-factor using β-NMR.
35Si radius measurements:
2006Kh08: 35Si produced by 181Ta(48Ca,X) fragmentation at E(48Ca)=60.3 MeV/nucleon at GANIL. Measured energy-integrated reaction cross sections at 30-65 MeV/nucleon using a silicon telescope as both active target and detector. Deduced reduced strong absorption radii, isospin dependence, and possible halo structure or large deformation.
1999Ai02: Si(35Si,X) at NSCL. Measured energy-integrated reaction cross sections at E=38-80 MeV/ nucleon. Deduced strong absorption radii.
35Si mass measurements: 1986Fi06, 1986Sm05, 1984Ma49
Theoretical calculations (binding energies, deformation, quadrupole moments, radii, levels, Jπ, etc.): 2011Ka03, 2009No01, 2008Wi11, 2007Ch82, 2004Kh16, 1999Du05, 1994Mo37, 1994Po05, 1987Wa10, 1986Wo02.
Q-value: S(2n)=10020 40, S(2p)=33930 40, Q(β-n)=2090 40 (2021Wa16)