ADOPTED LEVELS, GAMMAS for 118Rh
Author: Balraj Singh | Citation: ENSDF | Cutoff date: 14-Jan-2022
Author: Balraj Singh | Citation: ENSDF | Cutoff date: 15-DEC-2006
Author: R. B. Firestone | Citation: ENSDF | Cutoff date: 1-Jan-1997
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=10502 keV 24 | S(n)= 4061 keV 26 | S(p)= 1269×101 keV 43 | Q(α)= -871×101 keV 43 | ||
| Reference: 2021WA16 |
| References: | |||
| A | 9Be(238U,Fγ) | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | Final Levels | |
| 0 | 286 ms 10 % β- = 100 % β-n = 2.1 9 | |||||
| 0+X | A | (7-) | ||||
| 213+X 1 | A | (8-) | 213 | 0+X | (7-) | |
| 373+X 2 | A | (9-) | 160 | 213+X | (8-) | |
| 615+X 2 | A | (10-) | 242 | 373+X | (9-) | |
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | Final Levels | |||
| Band 1 - ΔJ=1 band | |||||||
| 0+X | (7-) | ||||||
| 213+X 1 | (8-) | ||||||
| 373+X 2 | (9-) | 160 | 213+X | (8-) | |||
| 615+X 2 | (10-) | 242 | 373+X | (9-) | |||
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | 286 ms 10 % β- = 100 % β-n = 2.1 9 | Theoretical T1/2=391.7 ms; %β-n=2.11, 1.98 (2021Mi17, %β-n for four different fission barriers). | |
| 0+X | (7-) | E(level): ΔJ=1 band. | |
| 213+X | (8-) | E(level): ΔJ=1 band. | |
| 373+X | (9-) | E(level): ΔJ=1 band. | |
| 615+X | (10-) | E(level): ΔJ=1 band. |
Mass measurements: 2008Su19, 2007Ha20
1994Be24, 1998Do08: 118Rh first produced and identified in Pb(238U,F) at 750 MeV/nucleon followed by mass separation. Cross section=160 μb.
1997So07: 208Pb(238U,F),E=20 MeV/nucleon, σ=336 μb
2006Wa10, 2000Jo18: 118Rh produced in the proton-induced fission of of natural uranium followed by mass separation using ion-guide technique. Measured half-life, γ and β rays.
2006Mo07: 118Rh formed and identified in 9Be(136Xe,X) reaction at E136Xe=121.8 MeV/nucleon. The A1900 fragment separator at NSCL facility at MSU was used to separate nuclei of interest. The secondary beam was implanted into β-decay arrangement consisting of Si(PIN) detectors and Si strip detectors (DSSD) and single-sided Si strip detectors (SSSD). Implantation and decay events were time stamped and correlated. Measured half-life from β spectrum.
2015Lo04: measured half-life from ion-β correlations, isotope produced in 9Be(238U,F) reaction at E=345 MeV/nucleon at RIKEN facility
2021Ha19: 118Rh produced in 9Be(238U,F),E=345 MeV/nucleon at the RBIF-RIKEN accelerators. Identification of 118Rh made on the basis of magnetic rigidity, time-of-flight and energy loss using the BigRIPS separator and ZeroDegree spectrometer. The separated nuclei were sent to the Advanced Implantation Detector Array (AIDA) for the detection of implanted ions and subsequent β- and β--delayed neutrons using six double-sided silicon-strip detector (DSSDs) for particles, and BRIKEN neutron counter array of 140 3He proportional counters embedded in a high-density polyethylene (HDPE) matrix. Measured (implanted ions)-β and (implanted ions)-β-n correlated events to deduce half-life of decay and delayed-neutron emission probability (%β-n or (P1n). Comparison of measured half-lives and Pn values with several theoretical calculations
Theoretical calculations: two references for half-lives and decay modes from the NSR database available at www.nndc.bnl.gov/nsr/ are listed in the ’document’ records in this dataset.
Q-value: S(2n)=10290 80, 28250 300 (syst), Q(β-n)=3466 25 (2021Wa16)