ADOPTED LEVELS, GAMMAS for 63Mn
Author: Jun Chen | Citation: Nucl. Data Sheets 196, 17 (2024) | Cutoff date: 30-Sep-2023
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=8749 keV 6 | S(n)= 6434 keV 8 | S(p)= 13323 keV 5 | Q(α)= -1.170×104 keV 14 | ||
| Reference: 2021WA16 |
| References: | |||
| A | 63Cr β- decay (129 MS) | B | 1H(68Fe,2P4NG) |
| C | 9Be(63Mn,63Mn’γ) | D | 238U(70Zn,xγ) |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0.0 | ABCD | 5/2(-) | 0.276 s 6 % β- = 100 % β-n = ? | |||||
| 248.4 5 | BCD | (7/2-) | 5.9 ps 4 | 248.4 5 | 100 | [M1] | 0.0 | 5/2(-) |
| 888 5 | BC | (9/2-) | 0.6 ps 4 | 640 5 | 100 | [M1] | 248.4 | (7/2-) |
| 1263 7 | BC | (11/2-) | < 0.7 ps | 375 5 | 100 | [M1] | 888 | (9/2-) |
E(level): From Eγ data
Jπ(level): Proposed in (68Fe,2p4nγ) and (63Mn,63Mn’γ) based on shell-model predictions, unless otherwise noted.
T1/2(level): From DSAM using the line-shape analysis with GEANT4 simulation in (63Mn,63Mn’γ) (2016Ba04) for excited states.
I(γ): From (68Fe,2p4nγ)
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 248.4 | (7/2-) | 5.9 ps 4 | 248.4 5 | [M1] | 0.00300 | B(M1)(W.u.)=0.243 +18-16, α=0.00300 4, α(K)=0.00271 4, α(L)=0.000259 4, α(M)=3.51×10-5 5, α(N)=1.674E-6 25 |
| 888 | (9/2-) | 0.6 ps 4 | 640 5 | [M1] | 0.000346 | B(M1)(W.u.)=0.14 +16-6, α=0.000346 8, α(K)=0.000312 7, α(L)=2.94×10-5 6, α(M)=3.99E-6 9, α(N)=1.92E-7 4 |
| 1263 | (11/2-) | < 0.7 ps | 375 5 | [M1] | 0.00113 | B(M1)(W.u.)>0.57, α=0.00113 4, α(K)=0.001023 35, α(L)=9.69×10-5 34, α(M)=1.32E-5 5, α(N)=6.31E-7 22 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 5/2(-) | 0.276 s 6 % β- = 100 % β-n = ? | μ=+3.439 3 (2016Ba44,2019StZV), Q=+0.48 4 (2016Ba44,2021StZZ) δ<r2>(55Mn,63Mn)=+0.706 fm2 13(stat)69(syst) (atomic), and +0.704 fm2 10(stat)69(syst) (ionic) (2016He14). E(level): δ<r2>(55Mn,63Mn)=+0.706 fm2 13(stat)69(syst) (atomic), and +0.704 fm2 10(stat)69(syst) (ionic) (2016He14). |
| E(level) | E(gamma) | Comments |
| 248.4 | 248.4 | E(γ): from (70Zn,Xγ). Others: 249 5 from (68Fe,2p4nγ) and (63Mn,63Mn’γ) |
| 888 | 640 | E(γ): weighted average of 645 6 from (68Fe,2p4nγ) and 637 5 from (63Mn,63Mn’γ) |
| 1263 | 375 | E(γ): from (63Mn,63Mn’γ). Other: 376 7 from (68Fe,2p4nγ) |
Mass measurements: 2012Na15 (-46.8869 MeV 37, ISOLTRAP at CERN), 1994Se12 (mass excess=-46.75 MeV 28, TOFI at LAMPF), 1990Tu01 (M.E.=-45.9 MeV 4, TOFI at LAMPF).
Other measurements:
2016Ba44: 63Mn was produced by bombarding a uranium carbide target with 1.4 GeV proton beam at ISOLDE at CERN. Measured hyperfine spectra using the bunched-beam collinear laser spectroscopy technique. Deduced spectroscopic quadrupole moment and magnetic dipole moment of 63Mn ground state. The spectroscopic quadrupole moment and the magnetic dipole moment of 55Mn (Q=+0.33 1 (from 1979De19) and μ=+3.46871790 9 (from 1974Lu08, with corrections for diamagnetic shielding)) were used as reference values. See also 2015Ba49 for their previous measurement using atomic manganese.
2016He14: E=1.4 GeV proton beam was produced from the ISOLDE facility at CERN. Target was a thick uranium carbide. Recoiling ions were ionized using the resonance ionization laser ion source (RILIS), mass-separated, cooled and bunched in the gas-filled RFQ ISCOOL, re-accelerated and guided to the laser spectroscopy beam line COLLAPS. Measured hyperfine spectra using collinear laser spectroscopy on atomic and ionic transitions, respectively. Deduced changes in mean-square charge radii relative to 55Mn.
Theoretical calculations:
2017Si17: calculated ground-state energy, S(2n), charge radius
2016Ku21,1998Ka34,1988Be23: calculated β- decay T1/2
1995Ri05: calculated binding energy
1976Da02: calculated mass excess
Q-value: S(2n)=11288 4, S(2p)=31290 230, Q(β-n)=3920 5 (2021Wa16)