ADOPTED LEVELS, GAMMAS for 61Mn
Author: Balraj Singh | Citation: ENSDF | Cutoff date: 25-Mar-2019
Authors: Kazimierz Zuber, Balraj Singh | Citation: Nucl. Data Sheets 125, 1 (2015) | Cutoff date: 25-Jan-2015
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=7178 keV 3 | S(n)= 6846 keV 3 | S(p)= 12122.6 keV 26 | Q(α)= -994×101 keV 23 | ||
| Reference: 2017WA10 |
| References: | |||
| A | 61Cr β- decay (234 MS) | B | Coulomb Excitation |
| C | 238U(64Ni,xγ) | 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(-) | 0.709 s 8 % β- = 100 % β-n ≤ 0.2 | |||||
| 157.1 2 | ABCD | (7/2-) | 157.1 2 | 100 | (M1+E2) | 0.0 | 5/2(-) | |
| 1034.6 3 | BCD | (9/2-) | 877.6 3 1035S | 100 | [M1(+E2)] [E2] | 157.1 0.0 | (7/2-) 5/2(-) | |
| 1142.3 4 | A | (1/2-,3/2) | 1142.2 4 | 100 | 0.0 | 5/2(-) | ||
| 1281.8 3 | BCD | (11/2-) | 247.2 2 1124.6 2 | 20 8 100 20 | (Q) | 1034.6 157.1 | (9/2-) (7/2-) | |
| 1497.2 4 | A | (3/2,5/2,7/2) | 354.8 4 1497.3 5 | 100 13 56 13 | 1142.3 0.0 | (1/2-,3/2) 5/2(-) | ||
| 1860.8 4 | A | (3/2,5/2,7/2) | 1860.8 4 | 100 | 0.0 | 5/2(-) | ||
| 2031.8 7 ? | A | 534.6 5 ? | 100 | 1497.2 | (3/2,5/2,7/2) | |||
| 2201.9 4 ? | C | 920.1 2 ? | 100 | 1281.8 | (11/2-) | |||
| 2378.2 4 | A | (3/2,5/2,7/2) | 2378.2 4 | 100 | 0.0 | 5/2(-) | ||
| 2502.2 4 | C | (15/2-) | 1220.4 2 | 100 | (Q) | 1281.8 | (11/2-) | |
| 2607.5 5 ? | C | 405.6 3 ? 1325.7 10 ? | 100 50 100 50 | 2201.9 1281.8 | (11/2-) | |||
| 2753.1 5 | C | 250.9 3 | 100 | (D) | 2502.2 | (15/2-) | ||
| 3131.6 6 | C | 378.5 3 | 100 | 2753.1 | ||||
| 3572.4 7 | C | 440.8 3 | 100 | 3131.6 | ||||
E(level): From least-square fit to Eγ data
M(γ): Tentative assignment from γγ(θ) data in 238U(64Ni,Xγ)
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 1 - γ cascade based on (5/2-) | |||||||
| 0.0 | 5/2(-) | 0.709 s 8 % β- = 100 % β-n ≤ 0.2 | |||||
| 157.1 2 | (7/2-) | 157.1 2 | 100 | (M1+E2) | 0.0 | 5/2(-) | |
| 1034.6 3 | (9/2-) | 877.6 3 1035S | 100 | [M1(+E2)] [E2] | 157.1 0.0 | (7/2-) 5/2(-) | |
| 1281.8 3 | (11/2-) | 247.2 2 1124.6 2 | 20 8 100 20 | (Q) | 1034.6 157.1 | (9/2-) (7/2-) | |
| 2502.2 4 | (15/2-) | 1220.4 2 | 100 | (Q) | 1281.8 | (11/2-) | |
| 2753.1 5 | 250.9 3 | 100 | (D) | 2502.2 | (15/2-) | ||
| 3131.6 6 | 378.5 3 | 100 | 2753.1 | ||||
| 3572.4 7 | 440.8 3 | 100 | 3131.6 | ||||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 157.1 | (7/2-) | 157.1 2 | (M1+E2) | 0.044 | B(E2)(W.u.)=30 4 (<a href= "http://www.nndc.bnl.gov/nsr/nsrlink.jsp?2009Va16 ">2009Va16</a>), α=0.044 35 | |
| 1034.6 | (9/2-) | 877.6 3 | [M1(+E2)] | B(E2)(W.u.)=0 (<a href= "http://www.nndc.bnl.gov/nsr/nsrlink.jsp?2009Va16 ">2009Va16</a>) | ||
| (9/2-) | 1035 | [E2] | B(E2)(W.u.)=7.5 15 (<a href= "http://www.nndc.bnl.gov/nsr/nsrlink.jsp?2009Va16 ">2009Va16</a>) |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 5/2(-) | 0.709 s 8 % β- = 100 % β-n ≤ 0.2 | μ=+3.535 2 (2016Ba44), Q=+0.36 3 (2016Ba44) Other %β-n=0.6 1 from 2000HaZL is not adopted, as values for other Mn isotopes in this work are in disagreement with published data. E(level): Other %β-n=0.6 1 from 2000HaZL is not adopted, as values for other Mn isotopes in this work are in disagreement with published data. Jπ(level): Systematics of Jπ of ground states of odd Mn nuclei and shell-model calculations (2009Cr02,2008Va08). See also shell-model calculations by 2013Ji04, level spectrum shown in figure 3. |
| 157.1 | (7/2-) | Jπ(level): Systematics of Jπ of ground states of odd Mn nuclei and shell-model calculations (2009Cr02,2008Va08). See also shell-model calculations by 2013Ji04, level spectrum shown in figure 3. | |
| 1034.6 | (9/2-) | Jπ(level): Systematics of Jπ of ground states of odd Mn nuclei and shell-model calculations (2009Cr02,2008Va08). See also shell-model calculations by 2013Ji04, level spectrum shown in figure 3. | |
| 1281.8 | (11/2-) | Jπ(level): Systematics of Jπ of ground states of odd Mn nuclei and shell-model calculations (2009Cr02,2008Va08). See also shell-model calculations by 2013Ji04, level spectrum shown in figure 3. | |
| 1860.8 | (3/2,5/2,7/2) | Jπ(level): γ to 5/2(-) suggests 1/2- to 9/2-; 1/2 or 9/2 less likely from apparent β feeding from (5/2-) parent state. Parity would be negative if the β transition is allowed, as suggested by apparent log ft value. | |
| 2378.2 | (3/2,5/2,7/2) | Jπ(level): γ to 5/2(-) suggests 1/2- to 9/2-; 1/2 or 9/2 less likely from apparent β feeding from (5/2-) parent state. Parity would be negative if the β transition is allowed, as suggested by apparent log ft value. |
| E(level) | E(gamma) | Comments |
| 157.1 | 157.1 | E(γ): unweighted average of 157.2 5 (β- data), 157.3 2 ((64Ni,Xγ) data), 156.7 1 ((70Zn,Xγ) data). Weighted average is 156.8 2 but with reduced χ2=3.9 |
| 2753.1 | 250.9 | M(γ): ΔJ=(0) |
1985Ru05: first identification of 61Mn from fragmentation of 82Se beam at 11.5 MeV/nucleon on tungsten target using on-line mass separator at GSI facility
1999Ha05: 1-GeV proton-induced spallation of uranium UC2 target at ISOLDE-CERN facility. The laser ionized Mn isotopes were extracted from the ion source and mass separated. Using tape systems measured β-delayed neutron multiscaling, Eγ and γγ coincidence. β-delayed neutron collected by multiscaling measurements using Mainz 4π He neutron counter.
Mass measurements: 2012Na15 (also 2012He13), 1994Se12, 1990Tu01.
Theory references: consult the NSR database (www.nndc.bnl.gov/nsr/) for ten references for structure calculations.
Q-value: S(p) deduced by evaluator from mass excess for 61Mn from 2017Wa10, and that for 61Cr from 2018Mo14 measurement.
Q-value: Q(β-n)=1600 4, S(2n)=12359 3, S(2p)=28490 160 (2017Wa10)