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

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=Run List=
 
=Run List=
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{| border="1"  |cellpadding="20" cellspacing="0
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|-
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|  Run || Description||
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|-
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|5792 || Ba-133 source, TDC not getting hits
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|-
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|5820 || empty, only counting with detector 180-3 (no TDC) 8 min 18 sec long, 396 Hz
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|-
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|5821 || Ba-132, only counting with detector 180-3 (no TDC) 6 min 1 sec long,  Hz
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|-
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|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''',
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|-
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|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''',
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|-
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|5902 || Ba-132 + Al rod 130100-012, only counting with detector 180-3 9 min  56sec long, 191 Hz
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|-
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|5908 || Ba-133 0.1 uCi source # 129789 , Using both detectors in OR mode 
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|-
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|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
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|-
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|5910 || Ba-132 + Al rod 130100-012, Using both detectors in '''OR''' mode, 33 min  5 sec long,    Hz
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|-
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|5912 || Ba-133 0.1 uCi source # 129789 , Using both detectors  OR mode ,  4 min  21 sec long,  809  Hz
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|-
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|5913 || Na-22 0.1 uCi source # 129741, Using both detectors  '''OR''' mode, 4 min  8 sec long,    656 Hz
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|-
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|5914 || Ba-132 + Al rod 130100-012, Using both detectors  '''OR''' mode, 13 min  17 sec long,  470  Hz
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|-
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|5915 || Ba-132 + Al rod 130100-012, Using both detectors  '''AND''' mode,  min  sec long,    Hz
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|-
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|}
  
  
  
 
[[PAA_8-22-13]]
 
[[PAA_8-22-13]]

Revision as of 22:55, 4 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]

Single neutron knockout

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


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

Run List

Run Description
5792 Ba-133 source, TDC not getting hits
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
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,
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
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
5910 Ba-132 + Al rod 130100-012, Using both detectors in OR mode, 33 min 5 sec long, Hz
5912 Ba-133 0.1 uCi source # 129789 , Using both detectors OR mode , 4 min 21 sec long, 809 Hz
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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