Difference between revisions of "Y-88 Half-life"

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[[File:Y-88_Halflife_898_custom.png | 400 px]][[File:Y-88_Halflife_898_coin_nocuts.png | 400 px]]
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[[File:Y-88_Halflife_1836.png | 400 px]]
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===898 keV Singles===
 
===898 keV Singles===
  
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Averaging over the half-life fits: 100.77 +/- 37.397
 
Averaging over the half-life fits: 100.77 +/- 37.397
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 +
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===898 keV Singles Using Ratios===
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[[File:Y-88_Halflife_898_sig_ratios.png | 400 px]]
  
 
===898 keV Coincidence===
 
===898 keV Coincidence===
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Averaging over the half-life fits: 159.105 +/- 65.381
 
Averaging over the half-life fits: 159.105 +/- 65.381
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===898 keV Integral Table (With Event Cuts)===
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{| border="1"  |cellpadding="20" cellspacing="0
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|-
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| Days ||<math>T_{1/2}</math> || Trig || Integral
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|-
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| 47 || 0.44 ||coin || 0.0214 +/- 1.535e-4
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|-
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|  rowspan="2" | 105 || rowspan="2" | 0.98 || sing || 1.364 +/- 0.0457
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|-
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| coin || 0.0052 +/- 9.117e-5
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|-
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|  rowspan="2" | 156 || rowspan="2" | 1.46 || sing || 0.8697+/- 0.0159
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|-
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| coin || 0.0042 +/- 1.103e-4
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|-
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|  rowspan="2" | 226 || rowspan="2" | 2.12 || sing || 0.6069 +/- 0.0184
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|-
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| coin || 0.0021 +/- 4.305e-5
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|-
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|  rowspan="2" | 242 || rowspan="2" | 2.27 || sing || 0.5807 +/- 0.0457
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|-
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| coin || 0.0014 +/- 8.033e-5
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|-
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|}
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'''Integral vs Time for singles:'''
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Use the p-values from the regression analysis to decide which fit is better.  The smaller the p-value the better the fit.
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[[File:Y-88_HalfLife_898_singles.png | 200 px]][[File:HalfLife_Fit_singles.png | 200 px]]
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'''Black Line''':y=-0.00614762*t+0.90238
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Half-life:162.7+/- 18.6 days
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'''Green Line''': y=-0.00626604*t+0.881547
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Half-life: 159.6 +/- 8.79 days
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'''Integral vs Time for coincidence:'''
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[[File:Y-88_HalfLife_ln_coin.png | 200 px]][[File:HalfLife_Fit_coin.png | 200 px]]
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'''Black Line''': y=-0.00926265*t-4.17913
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Half-life:107.96 +/- 20.3 days
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'''Green Line''': y=-0.00788375*t-4.36373
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Half-life: 126.84 +/- 3.41 days
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===1836.1 keV Integral Table (With Event Cuts)===
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{| border="1"  |cellpadding="20" cellspacing="0
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|-
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| Days ||<math>T_{1/2}</math> || Trig || Integral
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|-
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| 47 || 0.44 ||coin || 0.0130 +/- 1.168e-4
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|-
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|  rowspan="2" | 105 || rowspan="2" | 0.98 || sing || 0.8414 +/- 0.00897
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|-
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| coin ||0.0062 +/- 6.463e-5
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|-
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|  rowspan="2" | 156 || rowspan="2" | 1.46 || sing ||0.5015 +/- 0.0024
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|-
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| coin || 0.0046 +/- 1.742e-5
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|-
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|  rowspan="2" | 226 || rowspan="2" | 2.12 || sing ||0.1934 +/- 0.0115
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|-
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| coin || 0.0020 +/- 7.250e-5
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|-
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|  rowspan="2" | 242 || rowspan="2" | 2.27 || sing ||0.2449 +/- 0.0084
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|-
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| coin || 0.0017 +/- 2.191e-4
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|-
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|}
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[[File:Y-88_HalfLife_1836_singles.png | 200 px]][[File:HalfLife_Fit_1836_singles.png | 200 px]]
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'''Black Line''': y=-0.0102535*t+0.890494
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Half-life:97.53 +/- 18.1 days
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'''Green Line''': y=-0.00989653*t+0.85652
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Half-life: 101.05 +/- 1.93 days
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[[File:Y-88_HalfLife_1836_coin.png | 200 px]][[File:HalfLife_Fit_1836_coin.png | 200 px]]
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'''Black Line''': y=-0.0098011*t-3.978
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Half-life:102.03 +/- 10.156 days
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'''Green Line''': y=-0.00689077*t-4.31681
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Half-life: 145.12 +/- 4.130 days
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[[Cs-137 Half-life]]
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[[A_W_thesis]]

Latest revision as of 17:21, 16 September 2014

Y-88 Halflife 898 custom.pngY-88 Halflife 898 coin nocuts.png

Y-88 Halflife 1836.png

898 keV Singles

Y-88 Halflife 898 sig.png

Averaging over the half-life fits: 100.77 +/- 37.397


898 keV Singles Using Ratios

Y-88 Halflife 898 sig ratios.png

898 keV Coincidence

Y-88 Halflife 898 coin.png

Averaging over the half-life fits: 4630.602 +/- 7728.132

Using the Event Number cut on run 7236

Y-88 Halflife 898 coin cuts.png

Averaging over the half-life fits: 159.105 +/- 65.381



898 keV Integral Table (With Event Cuts)

Days [math]T_{1/2}[/math] Trig Integral
47 0.44 coin 0.0214 +/- 1.535e-4
105 0.98 sing 1.364 +/- 0.0457
coin 0.0052 +/- 9.117e-5
156 1.46 sing 0.8697+/- 0.0159
coin 0.0042 +/- 1.103e-4
226 2.12 sing 0.6069 +/- 0.0184
coin 0.0021 +/- 4.305e-5
242 2.27 sing 0.5807 +/- 0.0457
coin 0.0014 +/- 8.033e-5


Integral vs Time for singles: 

Use the p-values from the regression analysis to decide which fit is better.  The smaller the p-value the better the fit.

Y-88 HalfLife 898 singles.pngHalfLife Fit singles.png

Black Line:y=-0.00614762*t+0.90238 Half-life:162.7+/- 18.6 days

Green Line: y=-0.00626604*t+0.881547 Half-life: 159.6 +/- 8.79 days


Integral vs Time for coincidence:

Y-88 HalfLife ln coin.pngHalfLife Fit coin.png

Black Line: y=-0.00926265*t-4.17913 Half-life:107.96 +/- 20.3 days

Green Line: y=-0.00788375*t-4.36373 Half-life: 126.84 +/- 3.41 days


1836.1 keV Integral Table (With Event Cuts)

Days [math]T_{1/2}[/math] Trig Integral
47 0.44 coin 0.0130 +/- 1.168e-4
105 0.98 sing 0.8414 +/- 0.00897
coin 0.0062 +/- 6.463e-5
156 1.46 sing 0.5015 +/- 0.0024
coin 0.0046 +/- 1.742e-5
226 2.12 sing 0.1934 +/- 0.0115
coin 0.0020 +/- 7.250e-5
242 2.27 sing 0.2449 +/- 0.0084
coin 0.0017 +/- 2.191e-4

Y-88 HalfLife 1836 singles.pngHalfLife Fit 1836 singles.png

Black Line: y=-0.0102535*t+0.890494 Half-life:97.53 +/- 18.1 days

Green Line: y=-0.00989653*t+0.85652 Half-life: 101.05 +/- 1.93 days

Y-88 HalfLife 1836 coin.pngHalfLife Fit 1836 coin.png

Black Line: y=-0.0098011*t-3.978 Half-life:102.03 +/- 10.156 days

Green Line: y=-0.00689077*t-4.31681 Half-life: 145.12 +/- 4.130 days


Cs-137 Half-life

A_W_thesis

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