ADOPTED LEVELS, GAMMAS for 48Ar

Author: Jun Chen |  Citation: Nucl. Data Sheets 179, 1 (2022) |  Cutoff date: 30-Nov-2021 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=9930 keV 17S(n)= 5059 keV 17S(p)= 20060 keV SYQ(α)= -15576 keV 18
Reference: 2021WA16

References:
  A  9Be(48K,48ArG)  B  48Ca(238U,xγ)
  C  Coulomb Excitation 

General Comments:

Mass measurements: 2020Mo25 (Mass excess (M.E.)=-22355 17), 2020Me06 (M.E.=-22390 260), 2018Mi08 (M.E.=-22330 keV 120), 2015Me01 (M.E.=-22280 keV 310)

2012We08: 48Ar isotopes were produced from ISOLDE at CERN. Measured 48Ar β- decay, T1/2 with three setups: 1) βγ detector setup; 2) β-telescope setup; 3) with the secondary ECR ion source

1979Da16: 48Ca(π-,π+), E=290 MeV. Measured σ(E(π’)). See also 1981KaZW

2004Gr20,2003Gr22: Be(48Ca,X) E=60 MeV/nucleon at GANIL. Isotopes were selected by the LISE3 spectrometer, identified by ΔE-tof particle identification, and implanted in a 16-strip DSDD. β- particles were detected by plastic scintillator. Measured T1/2.

Nuclear structure calculations: 2019Sa58, 2018Yo06, 2017Ko24, 2015Sh21, 2015Wu07, 2014Eb02, 2014So09, 2014Wa03, 2013Wa05, 2013Xu01, 2013Xu15, 2012Ch48, 2011Ka03, 2005Va32, 2004Gr20, 2003Gr22, 1999La18, 1998La02, 1997Ma77, 1997Pa38, 1997Re04

Q-value: ΔS(p)=200 (syst,2021Wa16)

Q-value: S(2n)=8726 17, S(2p)=37570 400 (syst), Q(β-n)=5286 17 (2021Wa16)









E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)Final Levels
     0.0ABC 0+ 416 ms 19 
% β- = 100
% β-n = 38 6
    
  1039 6 ABC (2+) 6.7 ps +16-11    1039 6 
  100
     0.0
0+
  2195 17  B  (2+)     1156 15 
  2197?
  100
  <30
  1039
     0.0
(2+)
0+
  2754 13 AB  (4+)     1715 11 
  100
  1039
(2+)
  3279? B  (3+)     1085?
 
  2195
(2+)

Jπ(level): Assignments for excited states are from comparisons with shell-model calculations (2008Bh09), and systematics of even-even Ar isotopes

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.00+ 416 ms 19 
% β- = 100
% β-n = 38 6
%β-n: estimated by 2012We08 from the intensities of 2013γ from 47K β- decay and 3832γ from 48K β- decay.
E(level): %β-n: estimated by 2012We08 from the intensities of 2013γ from 47K β- decay and 3832γ from 48K β- decay.

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Additional Gamma Comments:

E(level)E(gamma)Comments
  1039  1039E(γ): weighted average of 1040 7 (2012Wi05) in Coulomb excitation, 1037 6 (2009Ga09) in (48K,48Arγ), and 1041 9 (2008Bh09) in (238U,Xγ)
  2754  1715E(γ): weighted average of 1706 10 (2009Ga09) in (48K,48Arγ) and 1729 13 (2008Bh09) in (238U,Xγ)

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