PAA Nephrite Jadiete

PAA on Jade

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

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]

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

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