ADOPTED LEVELS, GAMMAS for 35Al
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-)=14170 keV 40 | S(n)= 5297 keV 8 | S(p)= 15831 keV 9 | Q(α)= -14894 keV 8 | ||
| Reference: 2021WA16 |
| References: | |||
| A | 36Mg β-n decay (6.9 MS) | B | 9Be(36Si,35AlG) |
| C | HE(35Al,35Al’γ) | D | PB(35Al,34ALNG) |
| E | Coulomb Excitation | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | Final Levels | |
| 0 | AB DE | (5/2)+ | 38.1 ms 4 % β- = 100 % β-n = 37 4 % β-2n = ? | ||||
| 802 3 | AB | 802 4 | 100 | 0 | (5/2)+ | ||
| 1007 4 | B E | 1006 6 | 100 | 0 | (5/2)+ | ||
| 1866 4 | B | 859 4 1064 4 | 100 8 22 6 | 1007 802 | |||
| 1975 4 | B | 3/2+,5/2+ | 968 4 1174 5 1972 6 | 59 4 37 4 100 7 | 1007 802 0 | (5/2)+ | |
| 2734 7 | B | 1932 6 | 100 | 802 | |||
| 3245 5 | B | 3/2+,5/2+ | 2237 6 2440 7 3250 8 | 100 8 18.0 26 42 5 | 1007 802 0 | (5/2)+ | |
| 4275 9 ? | B | 3/2+,5/2+ | 4275 9 ? | 100 | 0 | (5/2)+ | |
E(level): From a least-squares fit to γ-ray energies.
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | (5/2)+ | 38.1 ms 4 % β- = 100 % β-n = 37 4 % β-2n = ? | %β-n: Unweighted average of 41 2 (2005Ti11,2006AnZW), 41 13 (2001Nu01,2002Nu02), 26 4 (1995ReZZ,2008ReZZ), and 40 10 (1989Le16,1989MuZU). Others: 43 9 (1999YoZW, preliminary), 87 +37-25 (1988Mu08,1988BaYZ) with a non-physical upper bound. Note that the original value reported in 2005Ti11 is 38 2 (2006AnZW report 38 3) and the evaluators have added intensities of γ rays deexciting the 4379 (0.9% 2) and 4255 (2.0% 8) levels in 34Si not included in their reported %β-n value, as the authors state that these levels are fed by either neutrons with energy below their detection threshold or by weak transitions that cannot be identified in the neutron spectrum. E(level): %β-n: Unweighted average of 41 2 (2005Ti11,2006AnZW), 41 13 (2001Nu01,2002Nu02), 26 4 (1995ReZZ,2008ReZZ), and 40 10 (1989Le16,1989MuZU). Others: 43 9 (1999YoZW, preliminary), 87 +37-25 (1988Mu08,1988BaYZ) with a non-physical upper bound. Note that the original value reported in 2005Ti11 is 38 2 (2006AnZW report 38 3) and the evaluators have added intensities of γ rays deexciting the 4379 (0.9% 2) and 4255 (2.0% 8) levels in 34Si not included in their reported %β-n value, as the authors state that these levels are fed by either neutrons with energy below their detection threshold or by weak transitions that cannot be identified in the neutron spectrum. |
| 1007 | XREF: E(1020). | ||
| 1975 | 3/2+,5/2+ | Jπ(level): From L(36Si,35Al)=2 of parallel momentum distributions of 35Al residues (2014St18). | |
| 3245 | 3/2+,5/2+ | Jπ(level): From L(36Si,35Al)=2 of parallel momentum distributions of 35Al residues (2014St18). | |
| 4275 | 3/2+,5/2+ | Level exists assuming that the 4275γ feeds the ground state of 35Al (2014St18). E(level): Level exists assuming that the 4275γ feeds the ground state of 35Al (2014St18). Jπ(level): From L(36Si,35Al)=2 of parallel momentum distributions of 35Al residues (2014St18). |
| E(level) | E(gamma) | Comments |
| 1007 | 1006 | E(γ): weighted average of 1003 4 from (36Si,35Alγ) and 1020 9 from Coulomb excitation |
Isotope discovery (2012Th10): C(40Ar,X) projectile fragmentation at Berkeley (1979Sy01).
35Al 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(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.
35Al decay measurements:
2017Ha23: 9Be(40Ar,X) at HIRFL. Measured T1/2.
2005Ti11,2006AnZW: (36S,X) at GANIL. Measured T1/2, β--delayed γ and neutron spectroscopy.
2001Nu01,2002Nu02: U(p,X) at CERN. Measured T1/2, β--delayed γ and neutron spectroscopy.
1999YoZW: 9Be(48Ca,X) and 181Ta(48Ca,X) at RIKEN. Measured T1/2 and %β-n.
1995ReZZ,2008ReZZ: 232Th(p,X) at LAMPF. Measured T1/2 and %β-n, and average En.
1989Le16,1989MuZU: 181Ta(48Ca,X) at GANIL. Measured T1/2 and %β-n.
1988Mu08,1988MuZY,1988BaYZ: 181Ta(86Kr,X) at GANIL. T1/2 and %β-n.
35Al radius measurement:
2006Kh08: 35Al 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.
35Al knockout-reaction measurements:
2012No05: 33,34,35,36Al produced by Be(48Ca,X) fragmentation at E(48Ca)=900 MeV/nucleon at GSI. Measured 1n removal cross sections and longitudinal momentum distributions of the residues. Deduced single-particle occupancies in the ground states of 33,34,35Al. σ(35Al|)34Al)=75 mb 4 and σ(36Al|)35Al)=95 mb 5.
2010Ro23: 35Al produced by 9Be(40Ar,X) fragmentation at E(40Ar)=700 MeV/nucleon at GSI. Measured 1n knockout cross sections and longitudinal momentum distributions of the residues. σ(35Al|)34Al)=65 mb 18.
35Al in-beam γ spectroscopy:
2006FuZX: 35Al produced by Be,C(40Ar,X) and observed one 760.1-keV 21 γ ray from He(35Al,35Alγ) without placing it in the level scheme.
35Al mass measurements: 2017Ga20, 2007Ju03, 1991Or01, 1991Zh24, 1987Gi05
Theoretical calculations (binding energies, deformation, quadrupole moments, radii, levels, J, π, mass, T1/2, etc): 2016Sa46, 2014Ca21, 2013Li39, 2013Sh05, 2011Ki12, 2009Yo05, 2004Kh16, 1994Po05.
Q-value: S(2p)=38400.5 85, Q(ε)=-15753 10, from mass excesses of 23598.8 43 for 33Na and 15529.5 71 for 35Mg measured by 2025Ly01; -224 7 for 35Al from 2021Wa16. Values from 2021Wa16: S(2p)=38580 450, Q(ε)=-15860 270
Q-value: S(2n)=7869 10, Q(β-n)=11697 7 (2021Wa16)