ADOPTED LEVELS for 69Mn
Author: C.D. Nesaraja | Citation: Nucl. Data Sheets 207, 1 (2026) | Cutoff date: 1-Apr-2023
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=13840 keV SY | S(n)= 4510 keV SY | S(p)= 16960 keV SY | Q(α)= -15670 keV SY | ||
| Reference: 2021WA16 |
| E(level) (keV) | Jπ(level) | T1/2(level) |
| 0.0 | (5/2-) | 25.8 ms 28 % β- = 100 % β-n = 40 20 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | (5/2-) | 25.8 ms 28 % β- = 100 % β-n = 40 20 | Configuration=ν5/2[312] Nilsson orbital. |
2015Be32: 69Mn was produced as fission fragment from the 9Be(238U ,F) reaction. E(238U)=345 MeV/nucleon from the Radioactive-Isotope Beam Factory (RIBF) facility at RIKEN bombarded a Be target. The fragments were separated with the Big-RIPS separator combined with the ZeroDegree Spectrometer. Measured Eγ, Iγ, βγ, β(t), βγ(t) using the 5 silicon detectors of the WAS3ABI array which was surrounded by the EURICA spectrometer consisting of 12 HPGe EUROBALL cluster detectors and 18 small volume LaBr3(Ce) scintillators. 4300 69Mn ions were implanted into Si detectors. Comparison to FRDM+QRPA model, KTUY+GT2 model and shell model calculations.
2012Ga06: Summary and compilation of the discovery of the Mn isotopes.
2011Da08,2002MaZN (thesis): Produced by projectile fragmentation of 86Kr beam on 50 mg/cm2 thick Ta at 57.8 MeV/nucleon. Separated by LISE2000 spectrometer at GANIL. Detector system included a three-element Si-detector telescope containing a double-sided silicon-strip detector (DSSSD) backed by a Si(Li) detector and surrounded by four clover type EXOGAM Ge detectors. Product identified by mass, atomic number, charge, energy loss and time of flight. Measured isotopic T1/2 from timing correlation between implanted ions and β decay events. Fitting procedure included five parameters: β-detection efficiency, background rate, mother, daughter and granddaughter half-lives.
1999Ha05: Produced by 1 GeV proton-induced spallation of U in a thick UC2 target at the ISOLDE facility at CERN. Identification and T1/2 measurements by chemically selective laser ionization and β- delayed n counting with the Mainz 4π3 He neutron detector.
1997Be70: Produced by projectile fission of 238U on 9Be target at 750 MeV/nucleon. Fission fragments separated with the FRS separator at GSI and identified by combination of ΔE-Bρ-tof, and trajectory. α total of 5 counts were assigned to 69Mn corresponding to cross section of 0.4 nanobarns.
Q-value: ΔQ(β-)=450, ΔS(n)=500, ΔS(p)=640, ΔQ(α)=640 (syst,2021Wa16)
Q-value: S(2n)=7920 450, S(2p)=38190 720, Q(β-n)=10470 440 (syst,2021Wa16)