Y-88 Half-life: Difference between revisions

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[[File:Y-88_Halflife_898_custom.png | 400 px]][[File:Y-88_Halflife_898_coin_nocuts.png | 400 px]]
[[File:Y-88_Halflife_1836.png | 400 px]]
===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
===898 keV Singles Using Ratios===
[[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
===898 keV Integral Table (With Event Cuts)===
{| border="1"  |cellpadding="20" cellspacing="0
|-
| Days ||<math>T_{1/2}</math> || Trig || Integral
|-
| 47 || 0.44 ||coin || 0.0214 +/- 1.535e-4
|-
|  rowspan="2" | 105 || rowspan="2" | 0.98 || sing || 1.364 +/- 0.0457
|-
| coin || 0.0052 +/- 9.117e-5
|-
|  rowspan="2" | 156 || rowspan="2" | 1.46 || sing || 0.8697+/- 0.0159
|-
| coin || 0.0042 +/- 1.103e-4
|-
|  rowspan="2" | 226 || rowspan="2" | 2.12 || sing || 0.6069 +/- 0.0184
|-
| coin || 0.0021 +/- 4.305e-5
|-
|  rowspan="2" | 242 || rowspan="2" | 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.
[[File:Y-88_HalfLife_898_singles.png | 200 px]][[File:HalfLife_Fit_singles.png | 200 px]]
'''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:'''
[[File:Y-88_HalfLife_ln_coin.png | 200 px]][[File:HalfLife_Fit_coin.png | 200 px]]
'''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)===
{| border="1"  |cellpadding="20" cellspacing="0
|-
| Days ||<math>T_{1/2}</math> || Trig || Integral
|-
| 47 || 0.44 ||coin || 0.0130 +/- 1.168e-4
|-
|  rowspan="2" | 105 || rowspan="2" | 0.98 || sing || 0.8414 +/- 0.00897
|-
| coin ||0.0062 +/- 6.463e-5
|-
|  rowspan="2" | 156 || rowspan="2" | 1.46 || sing ||0.5015 +/- 0.0024
|-
| coin || 0.0046 +/- 1.742e-5
|-
|  rowspan="2" | 226 || rowspan="2" | 2.12 || sing ||0.1934 +/- 0.0115
|-
| coin || 0.0020 +/- 7.250e-5
|-
|  rowspan="2" | 242 || rowspan="2" | 2.27 || sing ||0.2449 +/- 0.0084
|-
| coin || 0.0017 +/- 2.191e-4
|-
|}
[[File:Y-88_HalfLife_1836_singles.png | 200 px]][[File:HalfLife_Fit_1836_singles.png | 200 px]]
'''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
[[File:Y-88_HalfLife_1836_coin.png | 200 px]][[File:HalfLife_Fit_1836_coin.png | 200 px]]
'''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]]

Latest revision as of 17:21, 16 September 2014

898 keV Singles

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


898 keV Singles Using Ratios

898 keV Coincidence

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

Using the Event Number cut on run 7236

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



898 keV Integral Table (With Event Cuts)

Days [math]\displaystyle{ 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.

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:

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]\displaystyle{ 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

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

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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