ADOPTED LEVELS, GAMMAS for 100In
Authors: Balraj Singh and Jun Chen | Citation: Nucl. Data Sheets 172, 1 (2021) | Cutoff date: 31-Jan-2021
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=-7.46×103 keV 16 | S(n)= 11010 keV SY | S(p)= 1.67×103 keV 18 | Q(α)= -2.23×103 keV 20 | ||
Reference: 2017WA10 |
References: | |||
A | 100Sn ε decay (1.18 S) |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
0.0 | A | (6+) | 5.65 s 6 % ε = 100 % εp = 1.66 3 | |||||
0+X | A | (5+) | ||||||
95+X 1 | A | (4+) | 95 1 | 100 | [M1] | 0+X | (5+) | |
236+X 1 | A | (3+) | 141 1 | 100 | [M1] | 95+X | (4+) | |
672+X 2 | A | (2+) | 436 1 | 100 | 236+X | (3+) | ||
1423+X 1 S | A | (2+) | ||||||
2720+X 2 | A | 1+ | 1297 1 2048 1 | 136 49 100 49 | 1423+X 672+X | (2+) (2+) |
Jπ(level): From large-scale shell model calculations (2012Hi07); levels have almost pure configuration=πg9/2-1~#νg7/21 or belong to πg9/2-1~#νd5/21 multiplet
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
95+X | (4+) | 95 1 | [M1] | 0.573 | α=0.573 19 | |
236+X | (3+) | 141 1 | [M1] | 0.196 | α=0.196 5 |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0.0 | (6+) | 5.65 s 6 % ε = 100 % εp = 1.66 3 | %εp: from weighted average of 1.66 3 (2019Pa16); 1.7 4 (2012Lo08, observation of 756 βp coincidence events); and 1.6 3 (2002Pl03, proton-TAS coin spectrum). Other: >3.9 (1995Sz01, estimated from singles proton spectrum). |
2720+X | 1+ | Dominant configuration=πg9/29~#νg7/21. |
Other measurements:
1982Ku15: tentative identification from observation of delayed proton activity in a mass separated sample from 63Cu(40Ca,3n) reaction
1995Sc33: 100In produced in 9Be(124Xe,X) E=1095 MeV/nucleon. Measured half-life
1995Sz01: 100In produced by 50Cr(58Ni,3p5n),E=5.6 MeV/nucleon followed by mass separation. Measured β+p by ΔE-E telescope, γ, 511-γ coin, β+, total γ absorption, T1/2
1996Ch32 (also 1996Ch26,1997Mi07,1997Le36): 58Ni(50Cr,3p5n) E=5.3 MeV/nucleon at GANIL facility. Silicon detector telescope. Measured mass. Measured mass excess=-64.65 MeV 32, relative to that of 100Ag. Production cross section ≈1 μb (1997Mi07)
2000La09: 50Cr(58Ni,X) E=249, 348 MeV. Measured production cross section:
2002Pl03 (also 2003Pl02): 100In produced by 50Cr(58Ni,3p5n) E=5.6 MeV/nucleon at GSI facility followed by mass separation. Measured Eγ, Iγ, γγ, βγγ, (p)(TAS) coin, lifetimes in high resolution experiment using a HPGe detector, an EUROBALL-type cluster, a superclover from the VEGA array, and a low-energy photon spectrometer, and in a total-absorption experiment (TAS) using a large NaI(Tl) crystal, ancillary detectors, two Si detectors and one Ge detector. Deduced probability of delayed proton decay mode.
2008KrZW: 9Be(124Xe,X) E=1 GeV/nucleon. Measured yields using RISING array for γ rays at GSI facility
2012Lo08: 100In produced from fragmentation of a 112Sn beam at E=120 MeV/nucleon on a 195 mg/cm2 9Be target at the National Superconducting Cyclotron Laboratory (NSCL-MSU). Fragments separated by the A1900 Fragment Separator and the Radio Frequency Fragment Separator (RFFS). Ions were implanted in the double-sided silicon strip detector (DSSD). Detection system: NSCL Beta Counting System in conjunction with the SeGA Array of 16 HPGe detectors. Measured Eγ, Iγ, β spectra, E(p), I(p), βγ-coin, βp-coin, γβp-coin, half-life, β-delayed proton emission probability. Total of 756 βp coin events identified.
2019Pa16: E(124Xe)=345 MeV/nucleon beam incident on a 740 mg/cm2 thick 9Be target at the RIKEN-RIBF facility. The identification of the nuclide of interest was made through the BigRIPS separator and the ZeroDegree spectrometer by determining the atomic number and the mass-to-charge ratio of the ion using the tof-Bρ-ΔE method. The secondary beam was stopped in the double-sided silicon strip detector of the WAS3ABi spectrometer. The γ rays were detected by EURICA array comprising of 84 HPGe detectors. Measured Eγ, βγ-coin, βp-coin, βpγ-coin, half-lives by βγ(t), βp(t). Comparisons with previous experimental data and shell-model calculations.
Theory references: consult the NSR database (www.nndc.bnl.gov/nsr/) for 12 primary references dealing with nuclear structure calculations.
The proposed level scheme is tentative, except for the 1+ definite level at about 2.72 MeV. It is based on experimental observation of five gamma rays and a theoretical level scheme from large-scale shell model calculations (2012Hi07)
Q-value: Q(β- from averaged β-endpoint energy=3.69 MeV 16 (from 3.91 MeV 15 in 2019Lu08, 3.29 MeV 20 in 2012Hi07, 3.8 MeV +7-3 in 2002Fa13, and 3.4 MeV +7-3 in 1997Su06 and 1996Ki23 to the 2720+x level in 100In, and assuming x=25 keV 25. Other: 7.03 MeV 24 (2017Wa10, based on data in 2012Hi07, 2002Fa13, 1997Su06 and 1996Ki23)
Q-value: Estimated uncertainty=350 in S(n) (2017Wa10).
Q-value: S(2n)=26560 350 (syst), S(2p)=5820 190, Q(εp)=5110 180 (2017Wa10)