R5718-5716 Ba133Analysis

Ba-133 source lines

Ba-133 undergoes electron capture to Cs-133. 86% of the time it ends up in the 1/2+ , 437 keV excited state of Cs-133.

  Energy(keV)    Intensity(rel)
  53.1625( 6)     2.199(22)
  79.6139(13)      2.62( 6)
  80.9971(12)     34.06(27)
 160.6109(17)     0.645( 8)
 223.2373(14)     0.450( 4)
 276.3997(13)     7.164(22)
 302.8510( 6)     18.33( 6)
 356.0134( 6)     62.05(19)
 383.8480(12)      8.94( 3)

Coincidence lines for Ba-133

1. 276 && 306 keV lines http://www.nndc.bnl.gov/nsr/nsrlink.jsp?1995JU02
2. Ba-132 83 && 360 http://www.nndc.bnl.gov/nsr/nsrlink.jsp?1996KU01 http://www.nndc.bnl.gov/nsr/nsrlink.jsp?2002GA01
3. Ba-132 383 && 515 http://www.nndc.bnl.gov/nsr/nsrlink.jsp?1975GI11

Run list

Run	Description
5716	Coincidences for Ba-133 10 uCi source. The CFD widths were 10 nsec making the coincidence window 20 nsec. running time 7 hrs , 33 min, 14sec. Rate was 1 Hz
5718	Logic Unit in OR mode for Ba-133 10 uCi source. The CFD widths were 10 nsec making the coincidence window 20 nsec. running time 2 min, 5 sec. Rate was 4 kHz

Singles Run 5718 Analsysis

Photons from the source

ntuple->Draw("(ADC5-62.1537)/2.82207 >>(4096,0,4096)")

ntuple->Draw("(ADC9-39.8)/2.61747 >>(4096,0,4096)")

Did not observe the 53,79,160, 223, lines

Photon Energy (keV)	Description
82	Strong, probably the 80.9971 line from the 5/2+ to 7/2+ Cs-133 transition
277	Medium, probably the 276.3997 line from the 1/2+(437 keV) to the 5/2+ (161 keV) Cs-133 transition
303	Medium, probably the 302.8510 line from the 3/2+(383 keV) to 5/2+ (81 keV) Cs-133 transition
356	Strong, likely the 356.0134 line from the 1/2+(437 keV) to 5/2+ (81 keV) Cs-133 transition
384	Medium, likely the 383.8480 line from the 3/2+ (383 keV) excited state of Cs-133 to the ground state
510	Weak
584
609
913
970
913
970
911
970
1121
1277
1417

Coincidence Run 5716 Analysis

The 83, 276, 302, and 356 lines are are observed when a 200 nsec coincidence window is required.

276.3997(13) 7.164(22)

302.8510( 6)     18.33( 6)
356.0134( 6)     62.05(19)

PAA_CoincidenceCounting#Coincidence_lines_for_Eu-152