OSL Reader - Revision history

Harpconn at 01:54, 10 June 2018

2018-06-10T01:54:24Z

Harpconn at 21:38, 8 June 2018

2018-06-08T21:38:44Z

Harpconn at 20:17, 8 June 2018

2018-06-08T20:17:57Z

Harpconn at 00:14, 17 January 2018

2018-01-17T00:14:58Z

Harpconn at 00:13, 17 January 2018

2018-01-17T00:13:36Z

Harpconn at 17:23, 1 November 2017

2017-11-01T17:23:02Z

Harpconn at 17:20, 1 November 2017

2017-11-01T17:20:58Z

Harpconn at 17:19, 1 November 2017

2017-11-01T17:19:25Z

Harpconn at 17:19, 1 November 2017

2017-11-01T17:19:11Z

Harpconn at 17:18, 1 November 2017

2017-11-01T17:18:27Z

← Older revision		Revision as of 01:54, 10 June 2018
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	The OSL reader calculates the dose from the PMT counts, OSL sensitivity, and calibration factor. The equation used for this calculation is:		The OSL reader calculates the dose from the PMT counts, OSL sensitivity, and calibration factor. The equation used for this calculation is:

−	<math> \frac{PMT Counts}{(Calibration\ factor) (Sensitivity)} ~~= Dose\ (mRad)~~ </math>	+	<math> Dose\ (mRad) = \frac{PMT Counts}{(Calibration\ factor) (Sensitivity)} </math>

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-The OSL reader is an closed blue box of dimensions x by y by z. On the left side of the front face is the drawer in which an OSL in a holder is inserted. Once the drawer is shut, the black knob on the front is turned from H/P to E1, which activates the LED inside and allows the photo multiplier tube to count the hits through the crystal.
+The MicroStar OSL reader manufactured by Landauer is used to analyze the nanodot OSLs. By inserting an OSL into the reader, the crystal structure is exposed to an LED and a photomultiplier tube on the opposing side is used to measure the opacity. The OSL reader is an closed blue box of dimensions x by y by z. On the left side of the front face is the drawer in which an OSL in a holder is inserted. Once the drawer is shut, the black knob on the front is turned from H/P to E1, which activates the LED inside and allows the photo multiplier tube to count the hits through the crystal.
 -> Picture of OSL reader
@@ Line 5: / Line 5: @@
 -> Picture of OSL holder
 The OSL reader calculates the dose from the PMT counts, OSL sensitivity, and calibration factor. The equation used for this calculation is:
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-The OSL reader has software capable of calibrating the reader, which in turn creates a low and high dose calibration. These different calibrations give separate calibration factors. To create the calibrations within the software, Landauer supplies pre-dosed OSLs, of 5 different values. Due to uncertainty in exposure between dosing and usage, a custom calibration should be used to reduce error in succeeding measurements.
+The OSL reader has software capable of calibrating the reader, which in turn creates a low and high dose calibration. These different calibrations give separate calibration factors. To create the calibrations within the software, Landauer supplies pre-dosed OSLs, of 5 different values. Due to uncertainty in exposure between dosing and usage, a custom calibration should be used to reduce error in succeeding measurements. The PMT counts are then used in the Cs-137 calibration to give a calculated dose in milliRad (mRad).
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@@ Line 1: / Line 1: @@
-The OSL reader is a Landauer MicroStar reader. It uses a photo multiplier tube to count the hits off of the crystal structure in the OSLs when an LED is shining through it.
+The OSL reader is an closed blue box of dimensions x by y by z. On the left side of the front face is the drawer in which an OSL in a holder is inserted. Once the drawer is shut, the black knob on the front is turned from H/P to E1, which activates the LED inside and allows the photo multiplier tube to count the hits through the crystal.
-The measured dose is calculated through the following equation:
+-> Picture of OSL reader
 <math> \frac{PMT Counts}{(Calibration\ factor) (Sensitivity)} = Dose\ (mRad) </math>
 The low dose (10000 mRad>) calibration factor is 9.496494 as of 11/1/2017
 The high dose (>10000 mRad) calibration factor is 0.6806084 as of 11/1/2017
 According to this link https://www.nagase-landauer.co.jp/english/inlight/microstar.html, readout is 13 sec for OSLs in the microstar I.
 Technical specs https://www.nagase-landauer.co.jp/english/inlight/pdf/Readers/microstarreader.pdf
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← Older revision		Revision as of 00:14, 17 January 2018
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	According to this link https://www.nagase-landauer.co.jp/english/inlight/microstar.html, readout is 13 sec for OSLs in the microstar I.		According to this link https://www.nagase-landauer.co.jp/english/inlight/microstar.html, readout is 13 sec for OSLs in the microstar I.
		+
		+	Technical specs https://www.nagase-landauer.co.jp/english/inlight/pdf/Readers/microstarreader.pdf

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← Older revision		Revision as of 00:13, 17 January 2018
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	The sensitivity is 0.92		The sensitivity is 0.92
		+
		+	According to this link https://www.nagase-landauer.co.jp/english/inlight/microstar.html, readout is 13 sec for OSLs in the microstar I.

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← Older revision		Revision as of 17:23, 1 November 2017
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	[[Thesis]]		[[Thesis]]
		+
		+	[[Reproducibility with 137Cs]]

← Older revision		Revision as of 17:19, 1 November 2017
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	The measured dose is calculated through the following equation:		The measured dose is calculated through the following equation:

−	<math> \frac{PMT Counts}{(Calibration\ factor) (Sensitivity)} = Dose\ ~~\text{~~(mRad)} </math>	+	<math> \frac{PMT Counts}{(Calibration\ factor) (Sensitivity)} = Dose\ (mRad) </math>

← Older revision		Revision as of 17:18, 1 November 2017
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	The measured dose is calculated through the following equation:		The measured dose is calculated through the following equation:

−	<math> \frac{PMT Counts}{ ( Calibration\ factor \right ) \left ( Sensitivity \right )} = Dose\ \text{(mRad)} </math>	+	<math> \frac{PMT Counts}{\left ( Calibration\ factor \right ) \left ( Sensitivity \right )} = Dose\ \text{(mRad)} </math>