Filters for use in dosimetry
Described is an optically stimulated luminescence (OSL) sensor comprising one or more cylindrical cup-shaped filters.
1. A device comprising:
an optically stimulated luminescence (OSL) sensor comprising:
a first cylindrical cup-shaped filter having: a first circular base, a first cylindrical wall extending from the first circular base, and a first recess surrounded by the first circular base and the first cylindrical wall; and
an optically stimulated luminescent material (OSLM) mounted in the first recess of the first cylindrical cup-shaped filter; and
a second cylindrical cup-shaped filter in which the first cylindrical cup-shaped filter is mounted;
wherein the first cylindrical cup-shaped filter comprises a first energy compensating material.
2. The device of claim 1 , wherein the first cylindrical cup-shaped filter comprises aluminum.
3. The device of claim 1 , wherein the first cylindrical cup-shaped filter comprises a plastic having metal particles dispersed therein.
4. The device of claim 1 , wherein the first cylindrical cup-shaped filter comprises aluminum and the second cylindrical cup-shaped filter comprises copper.
5. The device of claim 1 , wherein the OSL sensor comprises one or more filter material discs located between the OSLM and the circular base of the first cylindrical cup-shaped filter.
6. The device of claim 5 , wherein the OSL sensor comprises a converter material disc located between the OSLM and the first cylindrical cup-shaped filter.
7. The device of claim 6 , wherein the converter material disc comprises high-density polyethylene and wherein there is a conformal disc comprising polyethylene located between the OSLM and the converter material disc.
8. The device of claim 6 , wherein the first cylindrical cup-shaped filter comprises aluminum.
9. The device of claim 8 , wherein the second cylindrical cup-shaped filter comprises copper.
10. The device of claim 1 , wherein the OSLM for the OSL sensor comprises an Al 2 O 3 :C material.
11. The device of claim 10 , wherein the Al 2 O 3 :C material has a grain size of 30 to 40 μm.
12. A device comprising:
an optically stimulated luminescence (OSL) sensor comprising:
a first cylindrical cup-shaped filter having: a first circular base, a first cylindrical wall extending from the first circular base, and a first recess surrounded by the first circular base and the first cylindrical wall; and
an optically stimulated luminescent material (OSLM) mounted in the first recess of the first cylindrical cup-shaped filter;
wherein the first cylindrical cup-shaped filter comprises a first energy compensating material;
wherein the OSL sensor comprises one or more filter material discs located between the OSLM and the circular base of the first cylindrical cup-shaped filter; and
wherein the OSL sensor comprises a first reference filter material disc located between the OSLM and the first cylindrical cup-shaped filter.
13. The device of claim 12 , wherein the first reference filter material disc comprises polytetrafluorethylene.
14. The device of claim 12 , wherein the first cylindrical cup-shaped filter comprises aluminum.
15. The device of claim 12 , wherein OSL sensor further comprises a second cylindrical cup-shaped filter in which the first cylindrical cup-shaped filter is mounted.
16. The device of claim 15 , wherein the first cylindrical cup-shaped filter comprises aluminum and wherein the second cylindrical cup-shaped filter comprises copper.
17. The device of claim 12 , wherein the first cylindrical cup-shaped filter comprises a plastic having metal particles dispersed therein.
18. The device of claim 12 , wherein the OSLM for the OSL sensor comprises an Al 2 O 3 :C material.
19. The device of claim 18 , wherein the Al 2 O 3 :C material has a grain size of 30 to 40 μm.
20. A device comprising:
an optically stimulated luminescence (OSL) sensor comprising:
a first cylindrical cup-shaped filter having: a first circular base, a first cylindrical wall extending from the first circular base, and a first recess surrounded by the first circular base and the first cylindrical wall; and
an optically stimulated luminescent material (OSLM) mounted in the first recess of the first cylindrical cup-shaped filter;
wherein the first cylindrical cup-shaped filter comprises a first energy compensating material;
wherein the OSL sensor comprises:
one or more filter material discs located between the OSLM and the circular base of the first cylindrical cup-shaped filter; and
a spring-type retaining ring mounted on an exposed side of the OSLM in the first cylindrical cup-shaped filter and compressed by the first cylindrical wall; and
wherein the retaining ring retains the OSLM and the one or more filter material discs in the first cylindrical cup-shaped filter.
21. The device of claim 20 , wherein the first cylindrical cup-shaped filter comprises aluminum.
22. The device of claim 20 , wherein OSL sensor further comprises a second cylindrical cup-shaped filter in which the first cylindrical cup-shaped filter is mounted.
23. The device of claim 22 , wherein the first cylindrical cup-shaped filter comprises aluminum and the second cylindrical cup-shaped filter comprises copper.
24. The device of claim 20 , wherein the first cylindrical cup-shaped filter comprises a plastic having metal particles dispersed therein.
25. The device of claim 20 , wherein the OSL sensor comprises a converter material disc located between the OSLM and the first cylindrical cup-shaped filter.
26. The device of claim 25 , wherein the converter material disc comprises high-density polyethylene and wherein there is a conformal disc comprising polyethylene located between the OSLM and the converter material disc.
27. The device of claim 20 , wherein the OSL sensor comprises a first reference filter material disc located between the OSLM and the first cylindrical cup-shaped filter.
28. The device of claim 27 , wherein the first reference filter material disc comprises polytetrafluorethylene.
29. The device of claim 20 , wherein the OSLM for the OSL sensor comprises an Al 2 O 3 :C material.
30. The device of claim 29 , wherein the Al 2 O 3 :C material has a grain size of 30 to 40 μm.
31. A device comprising:
a dosimeter sled including one or more optically stimulated luminescence (OSL) sensors,
wherein the one or more of the OSL sensors each comprise an optically stimulated luminescent material (OSLM) mounted in a first cylindrical cup-shaped filter,
wherein the first cylindrical cup-shaped filter comprises a first energy compensating material;
wherein each of the one or more OSL sensors comprises:
one or more filter material discs located between the OSLM and a circular base of the first cylindrical cup-shaped filter; and
a spring-type retaining ring mounted on an exposed side of the OSLM in the first cylindrical cup-shaped filter and compressed a first cylindrical wall of the first cylindrical cup-shaped filter, and
wherein the retaining ring retains the OSLM and the one or more filter material discs in the first cylindrical cup-shaped filter.
32. The device of claim 31 , wherein the first cylindrical cup-shaped filter is comprises aluminum.
33. The device of claim 31 , wherein the first cylindrical cup-shaped filter comprises a plastic having metal particles dispersed therein.
34. The device of claim 31 , wherein a first OSL sensor of the one or more OSL sensors comprises a second cylindrical cup-shaped filter in which the first cylindrical cup-shaped filter is mounted.
35. The device of claim 34 , wherein the first cylindrical cup-shaped filter comprises aluminum and the second cylindrical cup-shaped filter comprises copper.
36. The device of claim 31 , wherein a first OSL sensor of the one or more OSL sensors comprises a converter material disc located between the OSLM and the first cylindrical cup-shaped filter.
37. The device of claim 36 , wherein the converter material disc comprises high-density polyethylene and wherein there is a conformal disc comprising polyethylene located between the OSLM and the converter material disc.
38. The device of claim 31 , wherein a second OSL sensor of the one or more OSL sensors comprises a first reference filter material disc located between the OSLM and the first cylindrical cup-shaped filter.
39. The device of claim 38 , wherein the first reference filter material disc comprises polytetrafluorethylene.
40. The device of claim 38 , wherein a third OSL sensor of the one or more OSL sensors comprises a second reference filter material disc, wherein the second reference material disc is located between the OSLM and the first filter, and wherein the third OSL sensor is a comparator sensor for the second OSL sensor.
41. The device of claim 40 , wherein the second reference filter material disc comprises polytetrafluorethylene.
42. The device of claim 31 , wherein the OSLM for each OSL sensor of the one or more OSL sensors comprises an Al 2 O 3 :C material.
43. The device of claim 42 , wherein the Al 2 O 3 :C material has a grain size of 30 to 40 μm.
44. The device of claim 31 , wherein the one or more sensors comprise a plurality of sensors, wherein two or more of the one or more sensors each comprise a plastic/metal cylindrical cup-shaped filter having metal particles dispersed in a plastic, and wherein each of the plastic/metal cylindrical cup-shaped filters has metal particles having a different grain size.
45. The device of claim 44 , wherein each of the plastic/metal cylindrical cup-shaped filters is the first cylindrical cup-shaped filter.