ADOPTED LEVELS, GAMMAS for 32Mg
Author: Jun Chen | Citation: Nucl. Data Sheets 201, 1 (2025) | Cutoff date: 31-Oct-2024
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=10270 keV 8 | S(n)= 5778 keV 4 | S(p)= 20364 keV 14 | Q(α)= -1.455×104 keV 13 | ||
| Reference: 2021WA16 |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0.0 | ABCDEFGHIJKLMN | 0+ | 80.4 ms 4 % β- = 100 % β-n = 5.5 5 | |||||
| 885.30 10 | ABCDEFGHIJK MN | 2+ | 13.1 ps 10 | 885.3 1 | 100 | [E2] | 0.0 | 0+ |
| 1050 5 | E H | 0+ | 17 ns 10 | 165 5 | 100 | [E2] | 885.30 | 2+ |
| 2288.3 20 | GH | (0+,2+) | 1403 2 | 100 | 885.30 | 2+ | ||
| 2321.82 30 | AB D FGHIJ MN | 4+ | 0.62 ps 15 | 1436.7 3 | 100 | [E2] | 885.30 | 2+ |
| 2551.23 28 | AB D GH J L | (1-,2+) | 1665.6 5 2550.8 5 | 38 4 100 7 | 885.30 0.0 | 2+ 0+ | ||
| 2846.4 30 | GH | (0+,2+) | 1961 3 | 100 | 885.30 | 2+ | ||
| 2858.9 4 | AB D GH J | (1-,3-) | 1972.9 5 | 100 | 885.30 | 2+ | ||
| 3037.76 14 | AB GH L | (2-) | 486.1 5 2152.4 1 | 2.8 6 100 4 | 2551.23 885.30 | (1-,2+) 2+ | ||
| 3123.4 30 | D GH J | (3-,4+) | 2238 3 | 100 | 885.30 | 2+ | ||
| 3480 4 | D GH L | (2+) | 2595 4 | 100 | 885.30 | 2+ | ||
| 3553.0 5 | A D GH | (3-,4-) | 693.5 5 1231.7 5 | | 2858.9 2321.82 | (1-,3-) 4+ | ||
| 3678 4 | GH | (2+,4+) | 2793 4 | 100 | 885.30 | 2+ | ||
| 3945.9 30 | GH | 1624 3 | 100 | 2321.82 | 4+ | |||
| 4094.9 30 | GH J | (6+) | 1773 3 | 100 | 2321.82 | 4+ | ||
| 4154 5 | GH | (4+) | 3268 5 | 100 | 885.30 | 2+ | ||
| 4217 13 | D | (3-,4+) | 1895 13 | 100 | 2321.82 | 4+ | ||
| 4707 4 | GH | (4+) | 2385 4 | 100 | 2321.82 | 4+ | ||
| 4784.7 7 | A L | 1231.7 5 | 100 | 3553.0 | (3-,4-) | |||
| 4820.0 4 | A GH L | (2-,3-) | 1782.7 9 2268.5 5 3934.5 5 | 77 17 20.8 25 100 7 | 3037.76 2551.23 885.30 | (2-) (1-,2+) 2+ | ||
| 4919 4 | GH | (2+,4+) | 1796 3 | 100 | 3123.4 | (3-,4+) | ||
| 5168 23 | D | (2+,3-) | 4282 23 | 100 | 885.30 | 2+ | ||
| 5205 16 | D | (2+,3-) | 2883 16 | 100 | 2321.82 | 4+ | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 5233 4 | GH | (4+) | 2911 4 | 100 | 2321.82 | 4+ | ||
E(level): From a least-squares fit to γ-ray energies
T1/2(level): From RDDS in 9Be(34Si,Xγ) (2021El06), unless otherwise noted
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 885.30 | 2+ | 13.1 ps 10 | 885.3 1 | [E2] | 2.82×10-5 | B(E2)(W.u.)=15 3, α=2.82E-5 4, α(K)=2.64E-5 4, α(L)=1.697E-6 24, α(M)=6.28E-8 9 |
| 1050 | 0+ | 17 ns 10 | 165 5 | [E2] | 0.0102 | α=0.0102 14, α(K)=0.0096 13, α(L)=0.00062 8, α(M)=2.26×10-5 30 |
| 2321.82 | 4+ | 0.62 ps 15 | 1436.7 3 | [E2] | 7.52×10-5 | α=7.52×10-5 11, α(K)=8.38E-6 12, α(L)=5.38E-7 8, α(M)=1.994E-8 28 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 0+ | 80.4 ms 4 % β- = 100 % β-n = 5.5 5 | <r2>1/2=3.1863 fm 10 (stat) 161 (syst) (2012Yo01), 3.14 fm 7 (1998Su07). E(level): <r2>1/2=3.1863 fm 10 (stat) 161 (syst) (2012Yo01), 3.14 fm 7 (1998Su07). |
| 885.30 | 2+ | 13.1 ps 10 | B(E2)=0.0440 51 XREF: M(860). |
| 2288.3 | (0+,2+) | Jπ(level): Proposed by 2022Ki08 in 9Be(33Mg,Xγ), based on measured momentum distributions. | |
| 2551.23 | (1-,2+) | Jπ(level): Proposed by 2022Ki08 in 9Be(33Mg,Xγ), based on measured momentum distributions. | |
| 2846.4 | (0+,2+) | Jπ(level): Proposed by 2022Ki08 in 9Be(33Mg,Xγ), based on measured momentum distributions. | |
| 3037.76 | (2-) | Jπ(level): Proposed by 2022Ki08 in 9Be(33Mg,Xγ), based on measured momentum distributions. | |
| 3678 | (2+,4+) | Jπ(level): Proposed by 2022Ki08 in 9Be(33Mg,Xγ), based on measured momentum distributions. | |
| 4094.9 | (6+) | Jπ(level): Proposed by 2022Ki08 in 9Be(33Mg,Xγ), based on measured momentum distributions. | |
| 4154 | (4+) | Jπ(level): Proposed by 2022Ki08 in 9Be(33Mg,Xγ), based on measured momentum distributions. | |
| 4707 | (4+) | Jπ(level): Proposed by 2022Ki08 in 9Be(33Mg,Xγ), based on measured momentum distributions. | |
| 5233 | (4+) | Jπ(level): Proposed by 2022Ki08 in 9Be(33Mg,Xγ), based on measured momentum distributions. |
| E(level) | E(gamma) | Comments |
| 885.30 | 885.3 | E(γ): weighted average of 885.0 5 from 32Na β- decay, 885.3 1 from 33Na β-n decay, 887 7 from (32Mg,32Mg’γ), 885 15 from (36S,Xγ), 886 4 from (46Ar,Xγ), and 885 9 Coulomb excitation. Other: 860 50 from (32Mg,32Mg’γ); 883.9 3 from (32Mg,32Mg’γ) is discrepant. |
| 2288.3 | 1403 | E(γ): From 9Be(33Mg,Xγ) (2022Ki08) |
| 2321.82 | 1436.7 | E(γ): weighted average of 1436.1 5 from 32Na β- decay, 1437.0 3 from 33Na β-n decay, 1433 9 from (32Mg,32Mg’γ), 1434.9 13 from (32Mg,32Mg’γ), 1437 2 from (33Mg,Xγ), and 1438 4 from (46Ar,Xγ). Others: 1430 15 from (36S,Xγ), 1460 50 from (32Mg,32Mg’γ), and 1438 12 from Coulomb excitation. |
| 2551.23 | 1665.6 | E(γ): other: 1666 3 from (33Mg,Xγ) I(γ): weighted average of 38 6 from 32Na β- decay and 38 4 from (33Mg,Xγ). Other: 105 12 from (34Si,Xγ) is discrepant | 2550.8 | E(γ): weighted average of 2550.7 5 from 32Na β- decay and 2551 1 from 33Na β-n decay. Others: 2551 4 from (33Mg,Xγ) I(γ): from (33Mg,Xγ). Others: 100 9 from 32Na β- decay, 100 12 from (34Si,Xγ) |
| 2846.4 | 1961 | E(γ): From 9Be(33Mg,Xγ) (2022Ki08) |
| 2858.9 | 1972.9 | E(γ): other: 1973 3 from (33Mg,Xγ) |
| 3037.76 | 2152.4 | E(γ): from 33Na β-n decay. Others: 2151.7 5 from 32Na β- decay, 2152 3 from (33Mg,Xγ) |
| 3123.4 | 2238 | E(γ): other: 2230 14 from (32Mg,32Mg’γ). From 9Be(33Mg,Xγ) (2022Ki08) |
| 3480 | 2595 | E(γ): other: 2603 16 from (32Mg,32Mg’γ). From 9Be(33Mg,Xγ) (2022Ki08) |
| 3553.0 | 693.5 | I(γ): due to contamination, intensity is not established. | 1231.7 | E(γ): others: 1233 2 from (33Mg,Xγ), 1232 11 from (32Mg,32Mg’γ). Multiply placed |
| 3678 | 2793 | E(γ): From 9Be(33Mg,Xγ) (2022Ki08) |
| 3945.9 | 1624 | E(γ): From 9Be(33Mg,Xγ) (2022Ki08) |
| 4094.9 | 1773 | E(γ): other: 1773 4 from (46Ar,Xγ). From 9Be(33Mg,Xγ) (2022Ki08) |
| 4154 | 3268 | E(γ): From 9Be(33Mg,Xγ) (2022Ki08) |
| 4217 | 1895 | E(γ): from (32Mg,32Mg’γ) only |
| 4707 | 2385 | E(γ): From 9Be(33Mg,Xγ) (2022Ki08) |
| 4784.7 | 1231.7 | E(γ): Multiply placed |
| 4820.0 | 3934.5 | E(γ): Other: 3934 8 from (33Mg,Xγ) |
| 4919 | 1796 | E(γ): From 9Be(33Mg,Xγ) (2022Ki08) |
| 5168 | 4282 | E(γ): from (32Mg,32Mg’γ) only |
| 5205 | 2883 | E(γ): from (32Mg,32Mg’γ) only |
| 5233 | 2911 | E(γ): from (34Si,Xγ) |
This nuclide is central and of prime relevance in the ’island of inversion’ at or near n=20 semi-closed shell.
Mass measurements: 2013Ch49, 2006Ga04 (also 2006Lu09), 2001Lu20, 1991Zh24, 1991Or01, 1987Gi05, 1986Vi09, 1983De04
Other measurements:
1979Sy01: first identification of 32Mg in 12C(40Ar,X) reaction at 205 MeV/nucleon, deduced evidence for particle stability
1983De04, 1984Gu19: identification and mass excess measurement in Ir(p,X) E=10 GeV
1984La03: first study of decay characteristics and half-life measurement
2004Gr08: 32Mg formed in fragmentation of 36S beam with 9Be target at GANIL facility using LISE3 spectrometer. Measured isotopic half-life and delayed-neutron probability
2011Ka01: E=900 MeV/nucleon secondary 32Mg beam from Be(48Ca,X) reaction. Target=CH2. Fragment separator at GSI facility. Measured interaction cross sections by detecting unreacted Mg particles by Bρ-ΔE-tof method. Deduced matter radius by Glauber model analysis. Comparison with HF and RMF predictions. Interaction σ=1331 mb 24 for Carbon and 523 mb 47 for Hydrogen
RMS radii: 1998Su07 (also 1997Su04), 2006Kh08, 2011Ka01
Yield and cross sections: 2001Pe14, 1997Ta22
Structure calculations:
2021In02,2021Ku13,2021Ta32,2016Su20: calculated deformation parameter
2020Mi15: calculated levels, S(2n), B(E2)
2020Ts03,2019Sa23,2018Va09,2017De15,2016Ma10,2016Po03,2015Me06: calculated level, J, π, B(E2)
2016Ma73: calculated the first three 0+ levels
Q-value: S(2n)=8090 4, S(2p)=38690 250, Q(β-n)=6050 4 (2021Wa16)