Fig.1 Harshaw 3500 TL reader. Fig.2 Risoe DA 20 TL/OSL reader

(1)

Fig.1 Harshaw 3500 TL reader.

(2)

Irradiator: Thermo 2210 90S/90Y Beta source AIM:

1. Introduction to instrumentation

2. Distinguish between experimental parameters and dependent variables

3. Check sensitivity and sensitization: Measure TL for one heating rate according to the following protocol (material TLD 100):

Step. 1: TL measurement (Tmax=350 °C, HR=1 °C/s) for the “zero dose” Step. 2: TL measurement (Tmax=350 °C, HR=1 °C/s) for the background Step. 3: Irradiation ( 0.5 Gy)

Step. 4: TL measurement (Tmax=350 °C, HR=1 °C/s) Step. 5: Irradiation (0.5 Gy)

Step. 6: TL measurement (Tmax=350 °C, HR=1 °C/s) Step. 7: Irradiation (0.25 or 0.5 Gy)

Step. 8: TL measurement (Tmax=350 °C, HR=1 °C/s) Step. 9: Irradiation (0.25 or 0.5 Gy)

Step. 10: TL measurement (Tmax=350 °C, HR=1 °C/s)

Step. 11: TL measurement (Tmax=350 °C, HR=1 °C/s) without irradiation Step. 12: TL measurement (Tmax=350 °C, HR=1 °C/s) for the background

Experimental TL glow curves

 Experimental parameters 1. T_max(o_C) 2. Heating Rate β (o_C/sec)  Dependent Variables 1. Tpeak(oC) 2. I_peak(a.u.) 0 100 200 300 400 500 0 5000 10000 15000 20000 25000 30000 (d) (c) (b) T L ( a .u .)

Temperature (

°C)

(a)

τ

1

τ

2

τ

3

τ

4