Difference between revisions of "BO-08-22-13"

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Irradiation date was on  
 
Irradiation date was on  
  
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8/22/13 3:00 pm
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8/22/13 3:00 pm = 1377162000 unix time
  
 
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| 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 [[File:r5716-5718_Ba-133Coinc.png | 200 px]]  [[r5718-5716_Ba133Analysis]]
 
| 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 [[File:r5716-5718_Ba-133Coinc.png | 200 px]]  [[r5718-5716_Ba133Analysis]]
 
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|-
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|[[PAA_run_5792]] ||Fri, 23 Aug 2013 16:30:55 GMT || 1377275455 ||  || Ba-133 source, TDC not getting hits  ntuple->Draw("(ADC5-59.1813)/2.84727>>(4096,0,4096) ")  
+
|[[PAA_run_5792]] ||Fri, 23 Aug 2013 16:30:55 GMT || ||  || Ba-133 source, TDC not getting hits  ntuple->Draw("(ADC5-59.1813)/2.84727>>(4096,0,4096) ")  
 
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|-
 
|5820 || ||  || || empty, only counting with detector 180-3 (no TDC) 8 min 18 sec long, 396 Hz
 
|5820 || ||  || || empty, only counting with detector 180-3 (no TDC) 8 min 18 sec long, 396 Hz
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|5821 ||  ||  || || Ba-132, only counting with detector 180-3 (no TDC) 6 min 1 sec long,  Hz
 
|5821 ||  ||  || || Ba-132, only counting with detector 180-3 (no TDC) 6 min 1 sec long,  Hz
 
|-
 
|-
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|5822 || || || || Ba-132 + Al rod 130100-012, only counting with detector 180-3 (no TDC) 10 min 56 sec long, 459 Hz
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|5822 ||Fri, 23 Aug 2013 22:31:07 GMT || 135067 || 654 || Ba-132 + Al rod 130100-012, only counting with detector 180-3 (no TDC) 10 min 56 sec long, 459 Hz
 
|-
 
|-
−
|5823 || ||   || || empty rod 130100-011, only counting with detector 180-3 (no TDC) 11 min 49 sec long, 439 Hz
+
|5823 || Fri, 23 Aug 2013 22:43:51 GMT || 135831 || 707 || empty rod 130100-011, only counting with detector 180-3 (no TDC) 11 min 49 sec long, 439 Hz
 
|-
 
|-
 
|5889 || ||  || || Ba-133 source 129790 1.2 uCi, only counting with detector 180-3, TDC is back (someone changed the NIM->ECL connector polarity) 2  min  44 sec long, 1944 Hz, Det B HV ''' OFF''',
 
|5889 || ||  || || Ba-133 source 129790 1.2 uCi, only counting with detector 180-3, TDC is back (someone changed the NIM->ECL connector polarity) 2  min  44 sec long, 1944 Hz, Det B HV ''' OFF''',

Revision as of 21:20, 6 September 2013

Ba reactions

naturally occurring Isotope and their abundance

[math]{138 \atop\; }Ba(72%), {137 \atop\; }Ba(11%),{136 \atop\; }Ba (7.9%), {135 \atop\; }Ba(7%), {134 \atop\; }Ba(2%)[/math]


Ba-133 Calibration source

Analysis of lines and coincidences

R5718-5716_Ba133Analysis



Single neutron knockout

Ba-137 -> Ba-136* -> Ba-136 + gamma

[math]{137 \atop\; }Ba (\gamma,n){136 \atop \; }Ba^*[/math]

Below is a table of the photon energy and relative intensities that are given off as Ba-136 de-excites back to the ground state.

Energy(keV) Intensity(rel)
163.920 2 31.25 %
315.5 5 0.024 %
732.46 2 0.012 %
818.514 12 99.585 %
1048.073 20 99.819 %
1550.96 2 0.013 %

Gamma Coincidence Data:


For each gamma, the list of gammas in coincidence is given. If experimentally known, an estimate of the average time interval (in seconds) between both gammas is given 

  163.920	315.5, 732.46 (1.01E-12), 818.514 (2.94E-12), 1048.073, 1550.96 (1.01E-12)
  315.5	163.920, 732.46 (1.01E-12), 818.514 (2.94E-12), 1550.96 (1.01E-12)
  732.46	163.920 (1.01E-12), 315.5 (1.01E-12), 818.514 (1.93E-12)
  818.514	163.920 (2.94E-12), 315.5 (2.94E-12), 732.46 (1.93E-12), 1048.073 (1.93E-12)
 1048.073	163.920, 818.514 (1.93E-12)
 1550.96	163.920 (1.01E-12), 315.5 (1.01E-12)


Neutron Separation Energy= Energy needed to liberate a neutron from the Nucleus

=[math]S_n = B({138 \atop 56} Au_{118})-B({{136} \atop 55} Au_{117})[/math]
[math]\left [79(1.007825 u) + 118 (1.008665 u) - 196.97 u\right ] \frac{931.5 MeV}{u} -\left [79(1.007825 u) + 117 (1.008665 u) - 195.967 u\right ] \frac{931.5 MeV}{u}[/math]
[math]=\left [(1.008665 u) - 196.9665516 u+ 195.9665513 u\right ] \frac{931.5 MeV}{u} = 5.3 MeV[/math]

Single proton knockout

[math]{137 \atop\; }Ba (\gamma,p){136 \atop \; }Cs[/math]

Cs-136

1.2 MeV

Intense lines

Coincidences

1048 line

1048.073 66.881 (1.60E-9), 86.36, 109.681, 153.246, 163.920, 166.576 (4.71E-9), 176.602, 187.285, 233.5 (1.60E-9), 273.646, 302.4, 319.911, 340.547, 490.0, 507.188, 818.514

Run List

Irradiation date was on

8/22/13 3:00 pm = 1377162000 unix time

Run Date Time since Irradiation (Sec) Run Length (sec) 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 R5716-5718 Ba-133Coinc.png r5718-5716_Ba133Analysis
PAA_run_5792 Fri, 23 Aug 2013 16:30:55 GMT Ba-133 source, TDC not getting hits ntuple->Draw("(ADC5-59.1813)/2.84727>>(4096,0,4096) ")
5820 empty, only counting with detector 180-3 (no TDC) 8 min 18 sec long, 396 Hz
5821 Ba-132, only counting with detector 180-3 (no TDC) 6 min 1 sec long, Hz
5822 Fri, 23 Aug 2013 22:31:07 GMT 135067 654 Ba-132 + Al rod 130100-012, only counting with detector 180-3 (no TDC) 10 min 56 sec long, 459 Hz
5823 Fri, 23 Aug 2013 22:43:51 GMT 135831 707 empty rod 130100-011, only counting with detector 180-3 (no TDC) 11 min 49 sec long, 439 Hz
5889 Ba-133 source 129790 1.2 uCi, only counting with detector 180-3, TDC is back (someone changed the NIM->ECL connector polarity) 2 min 44 sec long, 1944 Hz, Det B HV OFF,
PAA_run_5900 Ba-133 source 129789 0.12 uCi, only counting with detector 180-3, 10 min 57 sec long, 378 Hz, Det B HV OFF,
5902 Ba-132 + Al rod 130100-012, only counting with detector 180-3 9 min 56sec long, 191 Hz
5908 Ba-133 0.1 uCi source # 129789 , Using both detectors in OR mode
PAA_run_5909 Ba-133 0.1 uCi source # 129789 , Using both detectors in OR mode , changed Det 180-2 threshold from 18 to 10 mV, 8 min 30 sec long, 783 Hz, ntuple->Draw("(ADC5-70.23597)/2.74588>>(4096,0,4096) ")
5910 Ba-132 + Al rod 130100-012, Using both detectors in OR mode, 33 min 5 sec long, Hz
PAA_run_5912 Ba-133 0.1 uCi source # 129789 , Using both detectors OR mode , 4 min 21 sec long, 809 Hz, ntuple->Draw("(ADC5-70.2881)/2.4783>>(4096,0,4096) ") , ntuple->Draw("(ADC9-47.29187)/2.61117 >> (4096,0,4096) ")
5913 Na-22 0.1 uCi source # 129741, Using both detectors OR mode, 4 min 8 sec long, 656 Hz
5914 Ba-132 + Al rod 130100-012, Using both detectors OR mode, 13 min 17 sec long, 470 Hz
5915 Ba-132 + Al rod 130100-012, Using both detectors AND mode, min sec long, Hz


PAA_8-22-13

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