ADOPTED LEVELS for 100Sn

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) 


S(n)= 17410 keV SYS(p)= 3200 keV SYQ(α)= -4140 keV SY
Reference: 2017WA10

References:
  A  104Te α decay:TENTATIVE 

General Comments:

Measurements:

1994Sc22, 1995Sc28, 1996Ki23 (also 1995Sc33,1997Su06): 100Sn produced by fragmentation of 124Xe in 9Be(124Xe,X) reaction at E=1095 MeV/nucleon at GSI facility. The isotopic identification made through event-by-event magnetic rigidity, time-of-flight, and energy deposition. α total of nine events for 100Sn observed as reported by 1996Ki23. Measured β-endpoint energy in 1997Su06 and 1996Ki23.

1994Le27, 1995Le14 (also 1995Ry03): 100Sn produced by Ni(112Sn,X) E=63 MeV/nucleon fragmentation reaction. The isotopic identification (α,Z,Q) was made by time-of-flight, energy loss, and kinetic energy measurements. α total of 24 events (11 events reported by 1994Le27 and 13 additional events by 1995Ry03 and 1995Le14) corresponding to 100Sn were observed

1996Ch32, 1997Mi07 (also 1997Le36): 58Ni(50Cr,2p5n) E=5.3 MeV/nucleon at GANIL facility. Silicon detector telescope. α total of 10 events of 100Sn22+ (charge state) were detected. Measured mass excess for 100Sn=-57770 300(stat) 900(syst); mass excess for 100In=-64650 300(stat) 100(syst); relative to that for 100Ag. Deduced mass difference=6880 300(stat) 900(syst) between 100Sn and 100In. Production cross section=40 nb

2002Fa13: Fragmentation of 112Sn beam at 1 GeV/nucleon by 9Be target at GSI facility. The fragments were separated, identified and stopped in a highly segmented silicon strip detector stack. Measured total energy of β+ events. One event ascribed to 100Sn (corresponding production cross section=1.8 pb). Deduced T1/2=1.00 s +54-26 (2002Fa13) from one event observed by 2002Fa13 and six events in earlier study by 1994Sc22.

2005Ka47: 58Ni(50Cr,2p5n) E=5.8 MeV/nucleon at GSI facility. Measured β gated gamma spectrum, production cross section (≈3 nb), no β- delayed γ rays detected, total absorption spectrometer (TAS) used.

2008Ba53: primary E=120 MeV/nucleon 112Sn beam from NSCL facility and 9Be target. Secondary beam of 100Sn nuclei analyzed and separated using A1900 fragment separator and radio frequency fragment separator (RFFS). Filtered secondary beam was implanted in β counting system surrounded by segmented Ge array of 16 detectors. The β counting system consisted of three silicon detectors and one double-sided strip detector in which the ions were implanted. The β calorimeter consisted of six single-sided strip detectors and a high-purity thin planar Ge detector. Measured cross sections for production of secondary beam nuclei and isotopic half-lives. The measured cross sections and half-lives were compared with model calculations

2012Lo08: 100Sn produced from fragmentation of a 112Sn beam at E=120 MeV/nucleon on a 195 mg/cm2 9Be target at NSCL-MSU facility. Fragments separated by the A1900 Fragment Separator and the Radio Frequency Fragment Separator (RFFS). Ions were implanted in a 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 14 100Sn nuclei were implanted into the DSSD but no βp coin events were identified.

2012Hi07: 100Sn produced in fragmentation of 124Xe beam at 1.0 GeV/nucleon with a 4.008 g/cm2 thick beryllium target at GSI facility. The FRS fragment separator was used to separate reaction products. Fragments were separated and identified event-by-event with respect to α/Q and Z based on magnetic rigidity and flight times. α total of 259 100Sn nuclei were identified, much more than in any previous experiment. The ions were implanted into segmented Si strip detectors surrounded by the RISING array consisting of 105 Ge detectors. Measured Eγ, Iγ, γγ-coin, Eβ, Iβ, 100Sn half-life by detecting radiations in correlation with 163 100Sn nuclei stopped in the implantation layer. Out of 163 100Sn implanted nuclei, 126 decay chains could be assigned.

2019Lu08: 100Sn from 345 MeV/nucleon 124Xe beam incident on a 4 m.m. 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. α total of 2500 nuclei of 100Sn were detected. The γ rays were detected by EURICA array comprising 47 HPGe detectors. Measured Eγ, Iγ, (implant)γ-coin, half-life of 100Sn decay by (implant)γ-decay and implantations decay curves. Comparisons with previous experimental data and shell-model calculations.

Theory references: consult the NSR database (www.nndc.bnl.gov/nsr/) for 301 primary references, 294 dealing with nuclear structure calculations and seven with decay modes and half-lives.

Q-value: Estimated uncertainties=590 in S(n), 420 in S(p), 500 in Q(α) (2017Wa10)

Q-value: S(2p)=4220 310, Q(εp)=5360 300 (2017Wa10). S(2n)=31390 (2019Mo01, theory)






E(level)
(keV)
XREFJπ(level) T1/2(level)
  0A 0+ 1.18 s 8 
% ε = 100
% εp < 17

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
  00+ 1.18 s 8 
% ε = 100
% εp < 17
%εp<17 (1996Ki23,1997Su06); <35% from 2012Lo08 based on analysis of seven 100Sn implantations, with no delayed proton events observed; upper limit of 35% given with 95% confidence limit. Other: from observation of a single proton event attributed to delayed proton decay in 2012Hi07, %p decay of the 2720+x level in 100In is estimated by 2012Hi07 as <1%.
E(level): %εp<17 (1996Ki23,1997Su06); <35% from 2012Lo08 based on analysis of seven 100Sn implantations, with no delayed proton events observed; upper limit of 35% given with 95% confidence limit. Other: from observation of a single proton event attributed to delayed proton decay in 2012Hi07, %p decay of the 2720+x level in 100In is estimated by 2012Hi07 as <1%.

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