IP Library › Granted Patent US 10,527,743
Granted Patent B2
US 10,527,743 · App. 15/812,012 · Granted Jan 7, 2020

System and method of neutron radiation detection

Inventors: Michael Iwatschenko-Borho (Roettenbach, DE); Erich Leder (Heroldsbach, DE); Ralf Pijahn (Erlangen, DE); Norbert Trost (Erlangen, DE); Reinhard Buchhold (Erlangen, DE)
Assignee: THERMO FISHER SCIENTIFIC MESSTECHNIK GMBH
G01T3/06C09K11/55C09K11/61G01T1/2023
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Quick Facts
Patent No.
US 10,527,743
App. No.
15/812,012
Granted
Jan 7, 2020
Kind
B2
Abstract

A gamma radiation detecting device includes a scintillation detector that detects gamma radiation, the detector comprising a scintillation material that includes an element that creates, by neutron activation of the element, an isotope that emits gamma radiation, and a processor configured to monitor the gamma radiation emitted by the isotope, thereby detecting exposure of the gamma radiation detecting device to neutron radiation.

Claims (26)

1. A gamma radiation detecting device comprising:

a. a scintillation detector that detects gamma radiation, the detector comprising a scintillation material that includes an element that creates, by neutron activation of the element, an isotope that emits gamma radiation, wherein the element is bromine (Br) and the isotope is Br-80 m or Br-82 m; and

b. a processor configured to monitor the gamma radiation emitted by the isotope, there by detecting exposure of the gamma radiation detecting device to neutron radiation.

2. The device of claim 1 , wherein the isotope further includes Br-80.

3. The device of claim 2 , wherein the processor is further configured to monitor beta radiation emitted by the Br-80 isotope.

4. The device of claim 1 , wherein the isotope further includes Br-82.

5. The device of claim 4 , wherein the processor is further configured to monitor beta radiation emitted by the Br-82 isotope.

6. The device of claim 1 , wherein the processor is further configured to monitor a predetermined energy gamma radiation emitted by the isotope.

7. The device of claim 6 , wherein the energy of the gamma radiation emitted by the Br-82 m isotope is 48 keV.

8. The device of claim 6 , wherein the energy of the gamma radiation emitted by the Br-80 m isotope is 85 keV.

9. The device of claim 1 , wherein the processor is further configured to monitor persistent gamma radiation emitted by the isotope after exposure of the gamma radiation detecting device to neutron radiation.

10. The device of claim 1 , further including a neutron moderator device in direct contact with the gamma radiation detecting device.

11. The device of claim 10 , wherein the neutron moderator device comprises at least one of polyethylene (PE), polyvinylchloride (PVC), polymethylmethacrylate (PMMA), and water.

12. A method of detecting neutron radiation, the method comprising:

a. detecting gamma radiation using a gamma radiation detecting device that includes a scintillation detector that detects gamma radiation, the detector comprising a scintillation material that includes an element that creates, by neutron activation of the element, an isotope that emits gamma radiation, wherein the element is bromine (Br) and the isotope is Br-80 m or Br-82 m; and

b. monitoring the gamma radiation emitted by the isotope, thereby detecting exposure of the gamma radiation detecting device to neutron radiation.

13. The method of claim 12 , wherein the isotope includes Br-80 and the monitoring step includes monitoring beta radiation energy emitted by the Br-80 isotope.

14. The method of claim 12 , wherein the isotope includes Br-82 and the monitoring step includes monitoring beta radiation energy emitted by the Br-82 isotope.

15. The method of claim 12 , wherein monitoring the gamma radiation emitted by the isotope includes monitoring a predetermined energy gamma radiation emitted by the isotope.

16. The method of claim 15 , wherein the monitoring step includes monitoring 48 keV gamma radiation emitted by the Br-82 m isotope.

17. The method of claim 15 , wherein the monitoring step includes monitoring 85 keV gamma radiation emitted by the Br-80 m isotope.

18. The method of claim 12 , wherein monitoring the gamma radiation emitted by the isotope includes monitoring persistent gamma radiation emitted after exposure of the gamma radiation detecting device to neutron radiation.

19. The method of claim 12 , further including placing the gamma radiation detecting device in direct contact with a neutron moderator device.

20. The method of claim 19 , wherein the neutron moderator device comprises at least one of polyethylene (PE), polyvinylchloride (PVC), polymethylmethacrylate (PMMA), and water.

21. The method of claim 12 , further including enclosing the gamma radiation detecting device in a gamma shielding enclosure comprising a high atomic number material.

22. The method of claim 21 , wherein the high atomic number material is at least one of lead (Pb), tin (Sn), or Tungsten (W).

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 4, 2018
From: IWATSCHENKO-BORHO, MICHAEL; LEDER, ERICH; PIJAHN, RALF; TROST, NORBERT; BUCHHOLD, REINHARD
To: THERMO FISHER SCIENTIFIC MESSTECHNIK GMBH
Reel/Frame 044538/0792 →
Continuity (2)
Provisional Application 62422168 · Nov 15, 2016
Related Publication 20190025445A1 · Jan 24, 2019