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

Revision as of 16:39, 3 September 2014

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

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

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

@@ Line 23: / Line 23: @@
+===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
+[[Cs-137 Half-life]]
 [[A_W_thesis]]