Difference between revisions of "PAA Nephrite Jadiete"

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==3/18/2017==
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==4/18/2017==
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calibration : 0.491937+0.808439*evt.Chan  For detector B
  
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calibration : -12.2744+/- 0.08 + 1.021+/- 0.0001*ADC[0]value
 
 
14:30: Ran 25B machine at 250 Hz, 90 mA, 4us Pulse Width, 21.5 MeV incident electrons for 1 hour, 870012 pulses.
 
14:30: Ran 25B machine at 250 Hz, 90 mA, 4us Pulse Width, 21.5 MeV incident electrons for 1 hour, 870012 pulses.
  
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I didn't see the Aluminum lines using  
 
I didn't see the Aluminum lines using  
  
−
MPA->Draw("-12.2744+1.021*evt.Chan>>(4096,0,4096)","evt.ADCid=0");
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MPA->Draw("0.491937+0.808439*evt.Chan>>(4096,0,4096)","evt.ADCid==1");
 +
 
 +
 
 +
Using the above calibration I see a line at 1766 leV with a half life of 2.56 min.
 +
 
 +
<math>\frac{ln(0.5)}{=-0.2699-0.0331) = 2.29 min < t_{1/2} <2.93= \frac{ln(0.5)}{=-0.2699+0.0331)</math>
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 +
 
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{| border="3"  cellpadding="5" cellspacing="0"
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| [[File:KQT-2-4-18-17_Peak1766.png| 200 px]]||[[File:KQT-2-4-18-17_HalfLife1766.png| 200 px]]
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|-
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|The blue line represents the counts observed after 480 second, the red line are the counts observed during the next 480 second time interval ||  A fit to the counts observed over the first 480 seconds
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|-
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|}
  
  
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There is a 630 keV line with a 5.2 minute half life
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There is a 630 keV line with a 219 second half life (= ln(0.5)/-0.003155)
  
 
Possible reactions
 
Possible reactions
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I see a line at 142 +/- 2 keV with a half life of about 576 seconds
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I see a line at 142 +/- 2 keV with a half life of about 474 seconds (7.9 min)
  
 
16:00: ran Se-Foil 50-50 by mass mixture was irradiate using the same conditions as above for  
 
16:00: ran Se-Foil 50-50 by mass mixture was irradiate using the same conditions as above for  
  
 +
==October 2017 Measurement==
 +
Below is a table of the measurements made on October 16, 2017. The files will be located on daq1 in the directory /data/IAC/Jade/Oct_2017
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 +
{| border="3"  cellpadding="5" cellspacing="0"
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| MPA Filename  ||Date || Start|| Stop ||  Sample || Position
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|-
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||AllJade_10_16_17.mpa || 10/16/17 ||11:12:13 ||12:20 ||4100.189 ||Pos 10 Det A
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|-
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||Background_AccOff_10_16_17.mpa || 10/16/17 || 12:22:14 ||13:24||3726.294 || n/a
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|-
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|}
  
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Using the Thorium rods the calibration constants are
  
 +
<math> Slope = 1.02068 \pm 0.0000962 </math>
 +
<math> Intercept = -12.4103 \pm 0.117 </math>
  
 
[[PAA_Research]]
 
[[PAA_Research]]

Latest revision as of 19:40, 16 October 2017

PAA on Jade


https://en.wikipedia.org/wiki/Jade#Nephrite_and_jadeite

IMG 0231.JPG

FullSizeRender.jpg

Sample Information (Mayir Mamtimin)

The chemical formula for nephrite is [math]Ca_2(Mg, Fe)_5Si_8O_{22}(OH)_2[/math].

Run Nmmber Date total time [sec] Sample
5875 02/10/17 17:48 4335 KQT-1
5900 2/12/17 1759 KQT-2
5901 2/12/17 1835 UT-1
5902 2/12/17 1201 UT-2
5904 2/12/17 671 UT-3
5905 2/12/17 1114 T-1
5906 2/12/17 967 T-2
5907 2/12/17 931 T-3
Run Number Date start time end time Position Sample runtime (s)
5915 2/12/17 16:42:15 17:01 7 UT-3 irradiation ended at 16:02 1131

Lines of interest

Reaction [math]E_{\gamma}[/math] [math]t_{1/2}[/math]
[math]{29 \atop 34\; }Si (\gamma,p){28 \atop \; }Al[/math] 1779 2.2 min
[math]{30 \atop 34\; }Si (\gamma,p){29 \atop \; }Al[/math] 1274 6.6 min
[math]{25 \atop 34\; }Mg (\gamma,p){24 \atop \; }Na[/math] 1369 15 hrs
[math]{54 \atop 34\; }Fe (\gamma,n){53 \atop \; }Fe[/math] 377 8.5 min


Relative Photon Dose Distribution as measured by the OSLs.

*Unknown calibration on OSL reader
*Unknown calibration on OSL reader
*Unknown calibration on OSL reader








































OSL Number Initial (mRad) X Position (cm) Y Position (cm) Final Dose (mRad) Final - Initial Dose (mRad)
386785 61 -20.32 0 53681 53620
35358G 60 -15.24 0 103945 103885
321412 65 -10.16 0 206000 205935
56332Q 101 -5.08 0 519683 519582
33143X 63 0 0 1015938 1015875
40757D 64 5.08 0 871016 870952
33432U 65 10.16 0 418717 418652
31812Q 294 15.24 0 174514 174220
330960 57 20.32 0 98713 98656
47799Z 220 0 20.32 74781 74561
42413T 61 0 15.24 150752 150691
31936E 62 0 10.16 303013 302951
653995 183 0 5.08 599322 599139
42529E 252 0 -5.08 556382 556130
351401 60 0 -10.16 209988 209928
31886B 58 0 -20.32 39653 39595
35312W 65 -20.32 20.32 27807 27742
31814M 94 -15.24 15.24 54535 54441
42127Q 80 -10.16 10.16 125909 125829
41762L 63 -5.08 5.08 382904 382841
32385M 125 5.08 -5.08 540179 540054
32739B 103 10.16 -10.16 130903 130800
33655I 58 15.24 -15.24 41572 41514
438784 123 20.32 -20.32 22208 22085
40335R 62 -2.54 2.54 616421 616359


Irradiation info

2/14/2017

ADC #=1

MPA->Draw("evt.Chan>>(4000,0,4000)","ADCid==1");

Filename Sample
5875 KQT-1
5900 KQT-2
5901 UT-1
5902 UT-2
5904 UT-3
5905 T-1
5906 T-2
5907 T-3

4/18/2017

calibration : 0.491937+0.808439*evt.Chan For detector B

14:30: Ran 25B machine at 250 Hz, 90 mA, 4us Pulse Width, 21.5 MeV incident electrons for 1 hour, 870012 pulses.

Sample KQT-2 was placed right after Dans Pb-Ni sample.

File /data/IAC/Jade/Jade_4-18-17/JadeAccOff.txt is a 30 minute measurement 2 minutes after beam off

File /data/IAC/Jade/Jade_4-18-17/JadeAccOn.txt is a ~ 1 hour measurement after the accelerator was turned on and just after the above measurement ended.

I didn't see the Aluminum lines using

MPA->Draw("0.491937+0.808439*evt.Chan>>(4096,0,4096)","evt.ADCid==1");


Using the above calibration I see a line at 1766 leV with a half life of 2.56 min.

[math]\frac{ln(0.5)}{=-0.2699-0.0331) = 2.29 min \lt t_{1/2} \lt 2.93= \frac{ln(0.5)}{=-0.2699+0.0331)[/math]


KQT-2-4-18-17 Peak1766.png KQT-2-4-18-17 HalfLife1766.png
The blue line represents the counts observed after 480 second, the red line are the counts observed during the next 480 second time interval A fit to the counts observed over the first 480 seconds


I see Cl-40 line at 2220 keV with half life of 1.35 min


There is a 630 keV line with a 219 second half life (= ln(0.5)/-0.003155)

Possible reactions



KQT-2-3-18-17 Peak630.pngKQT-2-3-18-17 HalfLife630.png


I see a line at 142 +/- 2 keV with a half life of about 474 seconds (7.9 min)

16:00: ran Se-Foil 50-50 by mass mixture was irradiate using the same conditions as above for

October 2017 Measurement

Below is a table of the measurements made on October 16, 2017. The files will be located on daq1 in the directory /data/IAC/Jade/Oct_2017

MPA Filename Date Start Stop Sample Position
AllJade_10_16_17.mpa 10/16/17 11:12:13 12:20 4100.189 Pos 10 Det A
Background_AccOff_10_16_17.mpa 10/16/17 12:22:14 13:24 3726.294 n/a

Using the Thorium rods the calibration constants are

[math] Slope = 1.02068 \pm 0.0000962 [/math] [math] Intercept = -12.4103 \pm 0.117 [/math]

PAA_Research

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