ADOPTED LEVELS, GAMMAS for 33Mg
Authors: Jun Chen and Balraj Singh | Citation: Nucl. Data Sheets 199, 1 (2025) | Cutoff date: 30-Sep-2024
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=13460 keV 7 | S(n)= 2280 keV 4 | S(p)= 20970 keV 40 | Q(α)= -1.586×104 keV 15 | ||
| Reference: 2021WA16 | |||||
| References: | |||
| A | 33Na β- decay (8.1 MS) | B | 34Na β-n decay (5.0 MS) |
| C | 1H(33Mg,33Mg’γ),(34Mg,33Mg’γ) | D | 9Be(34Mg,33MgG),(34Al,33MgG) |
| E | 9Be(36Si,33MgG) | F | 9Be(46Ar,33MgG) |
| G | Coulomb Excitation | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0.0 | ABCDEFG | 3/2- | 90.3 ms 10 % β- = 100 % β-n = 15 2 % β-2n = ? | |||||
| 484.1 1 | A CDEFG | (5/2-) | 484.1 1 | 100 | [E2] | 0.0 | 3/2- | |
| 546.2 1 | A C | (3/2-) | 546.2 1 | 100 | 0.0 | 3/2- | ||
| 705.0 1 | A D F | (3/2,5/2+) | 221.0 1 704.9 1 | 40 6 100 9 | 484.1 0.0 | (5/2-) 3/2- | ||
| 780 6 | D F | (7/2-) | 297 4 779 4 | 100 5 22 5 | 484.1 0.0 | (5/2-) 3/2- | ||
| 1242.4 1 | A DE | (1/2-,3/2-) | 758.2 1 1242.8 2 | 86 10 100 27 | 484.1 0.0 | (5/2-) 3/2- | ||
| 1850 40 | D | (1/2,3/2-) | 1850 40 | 100 | 0.0 | 3/2- | ||
| 3780 | A | |||||||
| 4000 | A | |||||||
E(level): From a least-squares fit to γ-ray energies for levels connected with γ transitions.
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 1 - Rotational band built on ν3/2[321]. | |||||||
| 0.0 | 3/2- | 90.3 ms 10 % β- = 100 % β-n = 15 2 % β-2n = ? | |||||
| 484.1 1 | (5/2-) | 484.1 1 | 100 | [E2] | 0.0 | 3/2- | |
| 780 6 | (7/2-) | 297 4 779 4 | 100 5 22 5 | 484.1 0.0 | (5/2-) 3/2- | ||
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 3/2- | 90.3 ms 10 % β- = 100 % β-n = 15 2 % β-2n = ? | μ=-0.7455 5 (2007Yo06,2019StZV), Q=+0.13 9 (2019Yo06,2021StZZ) Theoretical T1/2=167.6 ms, %β-n=38, %β-2n=0 (2019Mo01). E(level): Theoretical T1/2=167.6 ms, %β-n=38, %β-2n=0 (2019Mo01). Rotational band built on ν3/2[321]. |
| 484.1 | (5/2-) | E(level): Rotational band built on ν3/2[321]. | |
| 546.2 | (3/2-) | This level is defined by the evaluators based on the revised placement of 546γ. See detailed comments at 546γ. E(level): This level is defined by the evaluators based on the revised placement of 546γ. See detailed comments at 546γ. | |
| 780 | (7/2-) | E(level): Rotational band built on ν3/2[321]. | |
| 1242.4 | (1/2-,3/2-) | XREF: d(1258). | |
| 3780 | E(level): Decays to 32Mg by neutron emission. | ||
| 4000 | E(level): Decays to 32Mg by neutron emission. |
| E(level) | E(gamma) | Comments |
| 484.1 | 484.1 | E(γ): others: 483.6 10 from (33Mg,33Mg’γ), 484 6 from (34Mg,33Mgγ), 483 4 from (46Ar,33Mgγ), and 485 1 from Coulomb excitation. |
| 546.2 | 546.2 | E(γ): other: 561 17 from (33Mg,33Mg’γ) |
| 705.0 | 221.0 | E(γ): others: 219 8 from (34Mg,33Mgγ) and 220 4 from (46Ar,33Mgγ). I(γ): weighted average of 38 4 from 33Na β- decay and 62 15 from (46Ar,33Mgγ) |
| 704.9 | E(γ): others: 703 8 from (34Mg,33Mgγ) and 703 4 from (46Ar,33Mgγ). I(γ): others: 100 29 from (34Mg,33Mgγ) and 100 31 from (46Ar,33Mgγ). | |
| 780 | 297 | E(γ): from (46Ar,33Mgγ). Other: 295 7 from (34Mg,33Mgγ) I(γ): from (34Mg,33Mgγ). Other: 100 27 from (46Ar,33Mgγ) |
| 779 | E(γ): from (46Ar,33Mgγ). Other: 779 12 from (34Mg,33Mgγ) I(γ): weighted average of 21 5 from (34Mg,33Mgγ) and 25 8 from (46Ar,33Mgγ) | |
| 1242.4 | 1242.8 | E(γ): other: 1258 15 from (34Mg,33Mgγ) |
Identification: 1984Gu19: In(p,X) E=10 GeV, measured γ, isotopic half-life.
Mass measurements: 2019As04, 2013Ch49, 2006Lu09, 2006Ga04, 1991Zh24, 1991Or01, 1987Gi05
Other measurements:
2006Kh08: Cross section measurement in Si(33Mg,X) E(33Mg)=30-65 MeV/nucleon, deduced reduced strong absorption radius=1.260 fm2 19. 33Mg beam was obtained from fragmentation of 48Ca beam with 181Ta target at GANIL facility.
Nearly pure 2p-2h configuration deduced from g-factor, evidence for this nucleus being in the middle of the "island of inversion "
2007Yo06: 33Mg and 31Mg produced by bombarding a uranium-carbide target with 1.4 GeV proton beam at ISOLDE-CERN facility followed by laser ionization to select Mg isotopes The radioactive beam of Mg ions was accelerated to 40 keV, sent through a mass analyzer and then to a collinear laser spectroscopy arrangement for the measurement of spin and magnetic moment by laser spectrometry and nuclear magnetic resonance. Measurements are made relative to 31Mg
2010Ka05: C(33Mg,32Mg) E=898 MeV/nucleon at GSI. Measured the longitudinal-momentum distribution of one-neutron removal from 33Mg in ground state and the one-neutron removal cross-section, 74 mb 4.
2010Yo08: 33Mg produced at ISOLDE-CERN by 1.4 GeV protons impinging on a thick uranium-carbide target. Measured hyperfine structure and nuclear gyromagnetic ratio by combining laser spectroscopy with nuclear magnetic resonance.
2010Yo01, 2010Tr03: comments on 2008Tr07 for ground state parity of 33Mg
2011Ne14: review and evaluation of available experimental work on 33Mg
2015Mo17: 9Be(40Ar,X) E=95 MeV/nucleon at RIKEN. Measured transverse momentum distributions.
Structure calculations:
2021In02: calculated deformation parameter
2020Mi15, 2014Wa14: calculated ground-state energy, S(2n)
2016Ba59, 2013Sh05: calculated binding energy, charge radius, deformation parameters
2015Pu01, 2014Ca21, 2011Ki12, 2011Ne14: calculated low-lying levels, Jπ
1994Po05: calculated levels, binding energies
Q-value: S(2n)=8058 4, S(2p)=40800 270, Q(β-n)=7991 8 (2021Wa16). Q(β-2n)=3772 4, deduced by the evaluators from relevant masses in 2021Wa16