ADOPTED LEVELS, GAMMAS for 32Mg
Authors: Christian Ouellet, Balraj Singh | Citation: Nucl. Data Sheets 112, 2199 (2011) | Cutoff date: 24-Aug-2011
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=10270 keV 13 | S(n)= 5778 keV 5 | S(p)= 20379 keV 24 | Q(α)= -1.455×104 keV 10 | ||
Reference: 2012WA38 |
References: | |||
A | 32Na β- decay (13.2 MS) | B | 33Na β-n decay (8.0 MS) |
C | 34Na β-2n decay (5.5 MS) | D | 1H(32Mg,32Mg’γ) |
E | 3H(30Mg,p) | F | 4He(32Mg,32Mg’γ) |
G | 9Be(36S,xγ),(48Ca,xγ) | H | Coulomb Excitation |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
0 | ABCDEFGH | 0+ | 86 ms 5 % β- = 100 % β-n = 5.5 5 | |||||
885.3 1 | ABCDEFGH | 2+ | 11.4 ps 20 | 885.3 1 | 100 | (E2) | 0 | 0+ |
1058 2 | E | 0+ | > 7 ns | 172 1058S | 100 | [E2] [E0] | 885.3 0 | 2+ 0+ |
2322.3 3 | AB D FGH | 4+ | 1436.8 4 | 100 | 885.3 | 2+ | ||
2551 1 | AB D | (1,2+) | 1665.6 5 2550.7 5 | 38 6 100 9 | 885.3 0 | 2+ 0+ | ||
2858.2 5 | AB D G | (1-,3-) | 1972.9 5 | 100 | 885.3 | 2+ | ||
3037.7 2 | AB | (2-,3-) | 486.1 5 2152.4 2 | 2.8 6 100 4 | 2551 885.3 | (1,2+) 2+ | ||
3117 16 | D | (3-,4+) | 2230 14 | 100 | 885.3 | 2+ | ||
3490 17 | D | (1-,2+) | 2603 16 | 100 | 885.3 | 2+ | ||
3552.3 7 | A D | 693.5 5 1231.7 5 | | 2858.2 2322.3 | (1-,3-) 4+ | |||
4215 17 | D | (3-,4+) | 1895 13 | 100 | 2322.3 | 4+ | ||
4784.0 8 | A | 1231.7 5 | 100 | 3552.3 | ||||
4819.5 12 | A | (2-,3-) | 1782.7 9 2268.5 5 3934.5 5 | 75 17 21 3 100 7 | 3037.7 2551 885.3 | (2-,3-) (1,2+) 2+ | ||
5169 24 | D | (2+,3-) | 4282 23 | 100 | 885.3 | 2+ | ||
5203 19 | D | (2+,3-) | 2883 16 | 100 | 2322.3 | 4+ |
E(level): From least-squares fit to Eγ data
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Additional Data |
885.3 | 2+ | 11.4 ps 20 | 885.3 1 | (E2) | B(E2)(W.u.)=15 3 |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0 | 0+ | 86 ms 5 % β- = 100 % β-n = 5.5 5 | Mean square radius=1.196 fm2 11 (2006Kh08 in Si(32Mg,X) reaction at E=49.04 and 42.81 MeV/nucleon, also measured energy-integrated cross sections. E(level): Mean square radius=1.196 fm2 11 (2006Kh08 in Si(32Mg,X) reaction at E=49.04 and 42.81 MeV/nucleon, also measured energy-integrated cross sections. |
885.3 | 2+ | 11.4 ps 20 | B(E2)=0.047 8, β2=0.43 3 (2009Ta08) T1/2=16 ps 4 from βγγ(t) in 32Na decay, preliminary value. |
2322.3 | 4+ | XREF: H(?). Jπ(level): L(p,p’) transfer in inverse kinematics 1H(32Mg,32Mg’) reaction (2009Ta08). | |
2858.2 | (1-,3-) | XREF: γ(?). Jπ(level): L(p,p’) transfer in inverse kinematics 1H(32Mg,32Mg’) reaction (2009Ta08). | |
3117 | (3-,4+) | Jπ(level): L(p,p’) transfer in inverse kinematics 1H(32Mg,32Mg’) reaction (2009Ta08). | |
3490 | (1-,2+) | Jπ(level): L(p,p’) transfer in inverse kinematics 1H(32Mg,32Mg’) reaction (2009Ta08). | |
4215 | (3-,4+) | Jπ(level): L(p,p’) transfer in inverse kinematics 1H(32Mg,32Mg’) reaction (2009Ta08). | |
5169 | (2+,3-) | Jπ(level): L(p,p’) transfer in inverse kinematics 1H(32Mg,32Mg’) reaction (2009Ta08). | |
5203 | (2+,3-) | Jπ(level): L(p,p’) transfer in inverse kinematics 1H(32Mg,32Mg’) reaction (2009Ta08). |
E(level) | E(gamma) | Comments |
3552.3 | 693.5 | I(γ): due to contamination, intensity is not established | 1231.7 | E(γ): Multiply placed |
4784.0 | 1231.7 | E(γ): Multiply placed |
This nuclide is central and of prime relevance in the ’island of inversion’ at or near n=20 semi-closed shell.
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
Mass measurements: 2006Ga04 (also 2006Lu09), 2001Lu20, 1991Zh24, 1991Or01, 1987Gi05, 1986Vi09
RMS radii: 1998Su07 (also 1997Su04), 2006Kh08, 2011Ka01
Yield and cross sections: 2001Pe14, 1997Ta22
Selected references for structure calculations (levels, B(E2), etc.): 2011Ya01, 2009Ya04, 2009Yo05, 2008Ya14, 2006Zh19, 2005Ro10, 2004Ka21, 2004Kh16, 2004Ot02, 2003Ki19, 2001Ca49, 2001Ut02, 2000Ro27, 1999De07, 1999Si13, 1994Po05, 1992Fu07, 1987Po01, 1980Wi18, 1978Ba49
Q-value: Note: Current evaluation has used the following Q record
Q-value: Q(β-n)=5972 27, S(2n)=8162 22, S(2p)=38530 280 (2011AuZZ)
Q-value: Values in 2003Au03: Q(β-)=10110 90, S(n)=5809 21, S(p)=20900 210, Q(α)=-14620 150, Q(β-n)=5928 27, S(2n)=8187 20, S(2p)=38630 570