Package and support structure for radiation detector

• US 4,954,716 A
• Filed: 07/13/1988
• Issued: 09/04/1990
• Est. Priority Date: 07/13/1988
• Status: Expired due to Term

• Current Assignee: Landauer, Inc. (Fortive Corp.)
• Original Assignee: Landauer, Inc. (Fortive Corp.)
• Inventors: Wheeler, Robert V.
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): Eisenberg, J.
• Application Number:
  US07/218,640
• Time in Patent Office: 783 Days
• Field of Search: 250/472.1, 250/473.1, 250/475.2, 250/482.1, 250/492.1
• US Class Current: 250/482.1
• CPC Class Codes: G01T 7/02 Collecting means for receiving or storing samples to be investigated and possibly directly transporting the samples to the measuring arrangement; particularly for investigating radioactive fluids sampling, preparing specimens for investigation in general G01N1/00, G01N1/02; shielded cells or rooms structurally combined with manipulatin devices G21F; measuring of chromatographically separated samples G01N30/00 - G01N30/96
• CPC Class Codes: Y10S 250/02 Radon detection

Abstract

A package for shielded handling of a detector element and for selective exposure of said detector element to radiation, typically in radon detection of emitted alpha particle radiation, is provided in a unitary assembly. The package provides a support structure for securement of a detector member within the package and includes a shielding structure for selective insulation of the detector member in a shielding position of the support structure to prevent background irradiation of the detector member during handling and transport to and from the irradiation monitoring location. The package provides selective exposure of the detector element to irradiation in an exposing position of the support structure at the monitoring location. The package is provided with transport structure for relatively moving the support structure with the detector member so that the detector member can be selectively displaced between shielding and exposing positions. The package thus accommodates both convenient transport and monitoring exposure of the detector member without requiring the monitoring user to employ additional equipment. The package can be erected from a unitary blank of foldable material such as die-cut paperboard, and includes a self-supporting base structure for supporting the package in a standing configuration which exposes the detector member during radiation monitoring.

Claims

1. A package for shielded handling of detector element and for selective exposure of said detector element to irradiation such as in radon detection, said package comprising:

(a) a support structure for securement of said detector within said package;

(b) a shielding structure for selective insulation of said detector member from said radiation in a shielding position of said support structure;

(c) an exposure structure for exposing said detector member to said irradiation or the like in an exposing position of said support structure, said exposure structure and said shielding structure being longitudinally separated for enabling said selective exposure; and

(d) transport means carrying said support structure and detector member for longitudinally displacing said support structure and detector member between said shielding and exposure structures in order to selectively displace said detector member between said shielding and exposing positions of said support structure.

2. The package according to claim 1 wherein said support structure comprises anchoring means for securing a supporting frame in which said detector element is mounted.

3. The package according to claim 1 wherein said exposure structure includes an aperture within said package, said aperture located within the path of said motion of the detector member to enable selective exposure of the detector member through said aperture.

4. The package according to claim 3 wherein said transport means enables sliding movement of said support structure between said exposing position of the detector member at said aperture and said shielding position.

5. The package according to claim 1 in combination with a detector element including a film comprising material having the property of forming damage tracks along paths traversed by alpha particles.

6. The package according to claim 5 wherein said exposure structure provides simultaneous exposure of both opposite sides of said film.

7. The package according to claim 1 wherein said shielding structure comprises shielding material impenetrable to alpha particles.

8. The package according to claim 7 wherein said shielding material includes foil strips comprising aluminum.

9. The package according to claim 1 further comprising a base structure enabling a self-supporting configuration of said package in said exposing position for irradiation of said detector member.

10. The package according to claim 9 wherein said base structure provides spacing of said detector member in said exposing position at least 3 inches from vertical surfaces adjacent to said package.

11. The package according to claim 1 wherein said package is fabricated from paperboard material.

12. The package according to claim 1 wherein said package is erected from a unitary blank of foldable material.

13. The package according to claim 12 wherein shielding material impenetrable to alpha particles is mounted upon said unitary blank for erection into said shielding structure of said package.

14. The package according to claim 1 wherein said transport means is formed integral with said package.

15. A package for shielded handling of an alpha particle detector element and for selective exposure of said detector element, comprising:

a shielding structure including closely spaced opposite side portions preventing penetration of alpha particles therethrough, a transport slide carrying a detector element and moveable to and from a retracted position locating said detector element between said side portions and an extended position locating said detector element beyond said side portions for exposure to alpha particles, said side portions closely embracing said detector element in said retracted position for preventing the formation of alpha particle damage tracks thereon, and manually operable means connected with said transport slide for moving said transport slide between said extended and retracted positions.

16. The package according to claim 15 further comprising a base structure enabling a self-supporting configuration of said package in said extended position for irradiation of said detector member.

17. The package according to claim 16 wherein said base structure provides spacing of said detector member in said extended position at least 3 inches from vertical surfaces adjacent to said package.

18. The package according to claim 15 wherein said package is erected from a unitary blank of foldable material.

19. The package according to claim 18 wherein shielding material impenetrable to alpha particles is mounted upon said unitary blank for erection into said shielding structure of said package.

20. The package according to claim 15 wherein said transport slide is formed integral with said package.