Difference between revisions of "AW Singles Prob Y88 2015"

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|  245 ||  2.30 || 0.5807 <math>\pm 0.049 </math> [[Media:Run7235_898_raw.png]]  || 0.2449 <math>\pm</math> 0.032 [[Media:Run7235_1836_raw.png]] || 0.42 || 1.06
 
|  245 ||  2.30 || 0.5807 <math>\pm 0.049 </math> [[Media:Run7235_898_raw.png]]  || 0.2449 <math>\pm</math> 0.032 [[Media:Run7235_1836_raw.png]] || 0.42 || 1.06
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{| border="1"  |cellpadding="20" cellspacing="0
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| Days ||<math>T_{1/2}</math> || Energy (keV) || Raw Integral || Background Integral || Ratio || Sub Integral
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|  rowspan="2" | 108 || rowspan="2" | 1.01 || 898 ||  ||  ||  ||
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| 1836 ||  ||  ||  ||
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|  rowspan="2" | 159 || rowspan="2" | 1.49 || 898 ||  ||  ||  ||
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| 1836 ||  ||  ||  ||
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|  rowspan="2" | 229 || rowspan="2" | 2.15 || 898 ||  ||  ||  ||
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| 1836 ||
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|  rowspan="2" | 245 || rowspan="2" | 2.30 || 898 ||
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| 1836 ||
 
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Revision as of 16:57, 10 February 2015

Problem description:

The singles spectra production for the initial Y-88 activity is off by a factor of 2.
Right now the high energy line is a factor of 2 higher.


[math]N\left (\frac{1836}{898}\right ) =\frac{\frac{ UN(1836)}{.31}}{ \frac{UN(898)}{.78}}=\frac{5}{2} \frac{UN(1836)}{ UN(898)}=1 =[/math] Ratio


UCR[math]\equiv \frac{UN(1836)}{ UN(898)}=\frac{2}{5} = 0.4=[/math]ratio before efficiency correction

Days [math]T_{1/2}[/math] (898 keV) Raw (1836 keV)Raw UCR (898 keV) Integral Eff Cor (1836 keV) Integral Eff Cor Ratio
108 1.01 1.364 [math]\pm 0.062[/math] Media:Run7022_898_raw.png [math]\pm[/math] 0.048 Media:Run7022_1836_raw1.png 0.62 174.2 [math]\pm[/math] 13.24 269.8 [math]\pm[/math] 30.91 1.55
159 1.49 0.8697 [math]\pm 0.055 [/math] Media:Run7107_898_raw.png [math]\pm[/math] 0.042 Media:Run7107_1836_raw.png 0.58 111.07 [math]\pm[/math] 9.753 160.8 [math]\pm[/math] 20.9 1.45
229 2.15 0.4733[math]\pm 0.058 [/math] Media:Run7203_898_raw_ratio3.png [math]\pm[/math] 0.059 Media:Run7203_1836_raw_nocut.png 0.60 60.45 [math]\pm[/math] 8.272 90.48 [math]\pm[/math] 20.95 1.50
245 2.30 0.5807 [math]\pm 0.049 [/math] Media:Run7235_898_raw.png [math]\pm[/math] 0.032 Media:Run7235_1836_raw.png 0.42 74.16 [math]\pm[/math] 7.718 78.52 [math]\pm[/math] 12.89 1.06


What is the background contribution to the above rates ( Background is all channels with rate < 0.1 Hz)


Days [math]T_{1/2}[/math] (898 keV) Background (1836 keV) Background UCR Ratio
108 1.01 1.364 [math]\pm 0.062[/math] Media:Run7022_898_raw.png 0.8414 [math]\pm[/math] 0.048 Media:Run7022_1836_raw1.png 0.62 1.55
159 1.49 0.8697 [math]\pm 0.055 [/math] Media:Run7107_898_raw.png 0.5015 [math]\pm[/math] 0.042 Media:Run7107_1836_raw.png 0.58 1.45
229 2.15 0.4733[math]\pm 0.058 [/math] Media:Run7203_898_raw_ratio3.png 0.2822 [math]\pm[/math] 0.059 Media:Run7203_1836_raw_nocut.png 0.60 60.45 [math]\pm[/math] 8.272 1.50
245 2.30 0.5807 [math]\pm 0.049 [/math] Media:Run7235_898_raw.png 0.2449 [math]\pm[/math] 0.032 Media:Run7235_1836_raw.png 0.42 1.06
Days [math]T_{1/2}[/math] Energy (keV) Raw Integral Background Integral Ratio Sub Integral
108 1.01 898 1836
159 1.49 898
1836
229 2.15 898
1836
245 2.30 898
1836


Efficiency corrected plot of the two activities as a function of days


A_W_thesis#Final_problems_to_sort_out

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