ADOPTED LEVELS for 187Hf
Author: Balraj Singh | Citation: ENSDF | Cutoff date: 31-Mar-2022
Author: M. S. Basunia | Citation: Nucl. Data Sheets 110, 999 (2009) | Cutoff date: 1-Nov-2008
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=3900 keV SY | S(n)= 4650 keV SY | S(p)= 9970 keV SY | Q(α)= -430 keV SY | ||
| Reference: 2021WA16 |
| References: | |||
| A | 9Be(208Pb,xγ) | ||
| E(level) (keV) | XREF | T1/2(level) |
| 0 | % β- = 100 | |
| 0+X | A | 0.27 µs 8 % IT = 100 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | % β- = 100 | Only β- decay mode is expected, this 100% β- is assigned by inference. E(level): Only β- decay mode is expected, this 100% β- is assigned by inference. | |
| 0+X | 0.27 µs 8 % IT = 100 | 232- and 264-keV γ rays are associated with the decay of this isomer (2009Al30), but the decay scheme is not known. E(level): 232- and 264-keV γ rays are associated with the decay of this isomer (2009Al30), but the decay scheme is not known. |
1999Be63: 187Hf produced and identified in 9Be(197Au,X), E(197Au)=950 MeV/nucleon pulsed beam at the SIS synchrotron of GSI. Fragments of interest separated by Bπ-tof-ΔE method using FRS fragment separator, two position-sensitive scintillation detectors, time-of-flight, and multi-sampling ionization chambers (MUSICs). Measured production cross section.
2009Al30 (also 2012Al05,2011St21,2000PoZY): 187Hf produced in 9Be(208Pb,X),E=1 GeV/nucleon reaction at the SIS-18 heavy-ion synchrotron at GSI, followed by separation of fragments using GSI fragment separator (FRS). Measured relative isotopic yields, Eγ and half-life for a micro-sec isomer in 187Hf.
Q-value: Estimated uncertainties (2021Wa16): 210 for Q(β-) and S(n), 450 for S(p) and Q(α)
Q-value: S(2n)=10820 210, S(2p)=19100 540 (2021Wa16)