ADOPTED LEVELS for 245Md
Author: C.D. Nesaraja | Citation: Nucl. Data Sheets 189, 1 (2023) | Cutoff date: 14-Feb-2023
Full ENSDF file | Adopted Levels (PDF version)
| S(n)= 8340 keV SY | S(p)= 930 keV SY | Q(α)= 9010 keV SY | |||
| Reference: 2021WA16 |
| E(level) (keV) | Jπ(level) | T1/2(level) |
| 0.0 | (7/2-) | 0.33 s +15-8 % α ≈ 100 |
| X | (1/2-) | 0.9 ms +6-3 % α = ? % ε = ? |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | (7/2-) | 0.33 s +15-8 % α ≈ 100 | Only the α decay has been observed in 1996Ni09 and 2020Kh08. Branching ratio deduced from theoretical calculations in 2019Mo01 with T1/2(β decay)=11.8 s, and T1/2(α)=0.56 s :%α=95, %ε+β+=5. E(level): Only the α decay has been observed in 1996Ni09 and 2020Kh08. Branching ratio deduced from theoretical calculations in 2019Mo01 with T1/2(β decay)=11.8 s, and T1/2(α)=0.56 s :%α=95, %ε+β+=5. |
| X | (1/2-) | 0.9 ms +6-3 % α = ? % ε = ? | Configuration=1/2-[521]. |
2020Kh08: Decay properties were identified in the 197Au(50Ti,2n) fusion-evaporation experiment. E(50Ti)=231.5, 239.8 MeV, that corresponds to compound nucleus excitation energies of 26.2 MeV and 32.7 MeV, respectively from the universal linear accelerator UNILAC at GSI bombarded a rotating 197Au target. The evaporation residues (ERs) were separated using the the gas-filled transactinide separator and chemistry apparatus (TASCA). α double-sided silicon strip detector (DSSD) was used to detect implanting ERs and their subsequent decays. Energy calibrations were performed using α decays produced in the 48Ca+176Yb reaction with FWHM≈ 40 keV for 5.8 MeV-α particles. Measured Er-α-α and Er-fission events. See supplemental material from 2020Kh08 of the experimentally observed 7 α decay chains and 6 short -lived fissions. Refer to XUNDL compilation by B. Singh for 245Md on 31 December, 2022 for tabulated information of the correlated (Er-α-α) events and (Er-FI) events taken from the supplemental information provided by 2020Kh08
1996Ni09: α spontaneous fission activity observed from 209Bi(40Ar,x) at E=5.12 MeV/nucleon assigned to 245Md via αα correlations at the UNILAC accelerator, GSI, Darmstadt. Evaporation residue were separated and stopped at the focal plane and detected with PIPS detectors. Measured Eα, T1/2 and TSF. Obtained decay properties for 245mMd: Eα=8640 keV 20 and Eα=8680 keV 20.
Other reactions and nuclear structure calculations: 2010Ad19, 2010Do08, 2004Pa40.
Q-value: ΔS(n)=460, ΔS(p)=330, ΔQ(α)=120 (syst,2021Wa16)
Q-value: S(2p)=4000 330, Q(εp)=2010 320 (syst,2021Wa16)