Difference between revisions of "Reproducibility with 137Cs"

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[[Dose Calculations]]
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=Source Calibration and Dose Rate Data=
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:{| border="2" style="text-align:center;" |cellpadding="20" cellspacing="0
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|-
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|  Date  ||  Initial Source Strength (Ci) || Current Source Strength (Ci) ||  Distance to Faceplate (cm) || Exposure Rate (Roentgen/hr)°
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|-
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|6/27/17 || 20 ||  9.3 || 30.5||  17.691
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|-
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|9/11/17 || 20 || 9.3 || 30.5 || 17.606
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|-
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|}
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&deg;Calculated by TSO using <math>\dot R = \frac {\Gamma A }{ D^2} </math> where <math>\boldsymbol{\Gamma} = 3.3 \frac {(cm^2)(R)}{(mCi)(hr)} = .33 \frac {(m^2)(R)}{(Ci)(hr)} </math> ,  <math>\mathbf{A} = 9.3 Ci </math> ,  <math>\mathbf{D}=(\text{Distance to faceplate} + 11.2cm) </math>
  
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[[Shot Log]]
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There is an adjustment distance of 11.2cm which accounts for the distance from the faceplate to the <math> ^{137}Cs</math> source
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Total exposures are calculated by <math>\int\limits_{t_0}^{t_f}\dot R\ dt </math>
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=137Cs Shot Log=
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==Dot OSLs==
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:{| border="2" style="text-align:center;" |cellpadding="20" cellspacing="0
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|-
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|  Date  ||  Run Number ||  Run Time (s)  ||  Distance to Faceplate  || Number of OSLs in Stack || Exposure Rate (R/hr) || Total Exposed Dose (mRad)
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|-
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|9/8/17 || 1 ||  5660  || 30cm || 11 || 18.7188 || 30148.8
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|-
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|9/8/17 || 1 || 5660 || 30cm || 11 || 18.7188 || 30148.8
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|-
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|9/26/17 || 2 ||  4500  || 30cm || 11 || 18.7188 || 23398.6
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|-
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|9/26/17 || 2 || 4500 || 30cm || 11 || 18.7188 || 23398.6
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|-
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|}
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In these calculations, <math>\Gamma = 0.35 \frac {(m^2)(R)}{(Ci)(hr)} </math>
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==Nanodot OSL Calibration and Quality Control==
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===Landauer Dosed OSLs===
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:{| border="2" style="text-align:center;" |cellpadding="20" cellspacing="0
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|-
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|OSL # || Listed Dose (mRad) || PMT Counts ||Measured Dose (mRad) || Average Dose (mRad)
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|-
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|DN08276339J || Unexposed || - || 71.19332 || \
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|-
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|DN08276683L || Unexposed || - || 70.39211 || 72.10899
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|-
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|DN08258554P || Unexposed || - || 74.74154 || /
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|-
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|DN10806640H || 500 || - || 687.3246 || \
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|-
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|DN10608908Z || 500 || - || 681.0294 || 683.2422333
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|-
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|DN10806620J || 500 || - || 681.3727 || /
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|-
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|DN105057582 || 3000 || - || 3563.558 || \
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|-
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|DN104085766 || 3000 || - || 3522.352 || 3567.258333
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|-
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|DN10608909X || 3000 || - || 3615.865 || /
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|-
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|DN108066085 || 50000 || - || 55966.55 || \
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|-
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|DN103091798 || 50000 || - || 55420.36 || 55622.12
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|-
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|DN104086665 || 50000 || - || 55479.45 || /
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|-
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|DN10606601L || 100000 || - || 111610.5 || \
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|-
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|DN106066095 || 100000 || - || 114271.2 || 114191.3333
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|-
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|DN10712163M || 100000 || - || 116692.3 || /
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|-
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|}
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===137Cs Calibration OSLs===
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[[Click here for calibration data]]
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===QC OSLs===
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:{| border="2" style="text-align:center;" |cellpadding="20" cellspacing="0
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|-
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|OSL # || Listed Dose (mRad) || Measured Dose (mRad)|| Measured PMT Counts || Average Dose (mRad)
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|-
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|DN08264870R || Unexposed || 69.36198 || - || \
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|-
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|DN082701640 || Unexposed || 77.25963 || - || 74.74153667
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|-
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|DN08269802P || Unexposed || 77.603 || - || /
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|-
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|DN10712168C || 1000 || 1235.238 || - || \
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|-
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|DN10309170Q || 1000 || 1223.106 || - || 1226.119667
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|-
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|DN102095379 || 1000 || 1220.015 || - || /
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|-
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|}
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===[[Linear Fits]]===
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=[[Roentgen to Rad Conversion]]=
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=[[OSL Reader]]=
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 +
[[Table Templates]]
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 +
----
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 +
[[Thesis]]
  
 
[[HC TriMeV]]
 
[[HC TriMeV]]

Latest revision as of 18:43, 16 January 2018

Source Calibration and Dose Rate Data

Date Initial Source Strength (Ci) Current Source Strength (Ci) Distance to Faceplate (cm) Exposure Rate (Roentgen/hr)°
6/27/17 20 9.3 30.5 17.691
9/11/17 20 9.3 30.5 17.606

°Calculated by TSO using [math]\dot R = \frac {\Gamma A }{ D^2} [/math] where [math]\boldsymbol{\Gamma} = 3.3 \frac {(cm^2)(R)}{(mCi)(hr)} = .33 \frac {(m^2)(R)}{(Ci)(hr)} [/math] , [math]\mathbf{A} = 9.3 Ci [/math] , [math]\mathbf{D}=(\text{Distance to faceplate} + 11.2cm) [/math]

There is an adjustment distance of 11.2cm which accounts for the distance from the faceplate to the [math] ^{137}Cs[/math] source

Total exposures are calculated by [math]\int\limits_{t_0}^{t_f}\dot R\ dt [/math]

137Cs Shot Log

Dot OSLs

Date Run Number Run Time (s) Distance to Faceplate Number of OSLs in Stack Exposure Rate (R/hr) Total Exposed Dose (mRad)
9/8/17 1 5660 30cm 11 18.7188 30148.8
9/8/17 1 5660 30cm 11 18.7188 30148.8
9/26/17 2 4500 30cm 11 18.7188 23398.6
9/26/17 2 4500 30cm 11 18.7188 23398.6

In these calculations, [math]\Gamma = 0.35 \frac {(m^2)(R)}{(Ci)(hr)} [/math]

Nanodot OSL Calibration and Quality Control

Landauer Dosed OSLs

OSL # Listed Dose (mRad) PMT Counts Measured Dose (mRad) Average Dose (mRad)
DN08276339J Unexposed - 71.19332 \
DN08276683L Unexposed - 70.39211 72.10899
DN08258554P Unexposed - 74.74154 /
DN10806640H 500 - 687.3246 \
DN10608908Z 500 - 681.0294 683.2422333
DN10806620J 500 - 681.3727 /
DN105057582 3000 - 3563.558 \
DN104085766 3000 - 3522.352 3567.258333
DN10608909X 3000 - 3615.865 /
DN108066085 50000 - 55966.55 \
DN103091798 50000 - 55420.36 55622.12
DN104086665 50000 - 55479.45 /
DN10606601L 100000 - 111610.5 \
DN106066095 100000 - 114271.2 114191.3333
DN10712163M 100000 - 116692.3 /

137Cs Calibration OSLs

Click here for calibration data

QC OSLs

OSL # Listed Dose (mRad) Measured Dose (mRad) Measured PMT Counts Average Dose (mRad)
DN08264870R Unexposed 69.36198 - \
DN082701640 Unexposed 77.25963 - 74.74153667
DN08269802P Unexposed 77.603 - /
DN10712168C 1000 1235.238 - \
DN10309170Q 1000 1223.106 - 1226.119667
DN102095379 1000 1220.015 - /

Linear Fits

Roentgen to Rad Conversion

OSL Reader

Table Templates

Thesis

HC TriMeV

Retrieved from "https://wiki.iac.isu.edu/index.php?title=Reproducibility_with_137Cs&oldid=120758"