A visual detection system for determining tritium surface deposition employing phosphor coated materials

Author

Gentile, C.A. ; Zweben, S.J. ; Skinner, C.H. ; Young, K.M. ; Parker, J. ; Ciebiera, L. ; Langish, S.W. ; von Halle, A. ; Kennedy, C.W. ; Osobe, K.

Author_Institution

Plasma Phys. Lab., Princeton Univ., NJ, USA

fYear

1999

fDate

1999

Firstpage

319

Lastpage

320

Abstract

A method for visually observing tritium deposition on the surface of TFTR D-T tiles is being investigated at PPPL. A green phosphor (P31, zinc sulfide: copper) similar to that used in oscilloscope screens with a wavelength peak of 530 nm was positioned on the surface of a TFTR D-T tile. The approximately 690 gram tile, which contains approximately 1.5 Ci of tritium located on the top ~1-50 microns of the surface, was placed in a two filter lexan chamber at Standard Temperature and Pressure. The phosphor plates and phosphor powder were placed on the surface of the tile which resulted in visible light being observed, the consequence of tritium betas interacting with the phosphor. This technique provides a method of visually observing varying concentrations of tritium on the surface of D-T carbon tiles, and may be employed (in a calibrated system) to obtain quantitative data

Keywords

fusion reactor fuel; phosphors; radiation detection; tritium; 350 nm; D-T; D-T tiles; T; T surface deposition; TFTR; ZnS:Cu; green phosphor; phosphor coated materials; phosphor plates; phosphor powder; visual detection system; Beta rays; Charge coupled devices; Detectors; Laboratories; Lattices; Phosphors; Physics; Plasma materials processing; Silicon; Tiles;

fLanguage

English

Publisher

ieee

Conference_Titel

Fusion Engineering, 1999. 18th Symposium on

Conference_Location

Albuquerque, NM

Print_ISBN

0-7803-5829-5

Type

conf

DOI

10.1109/FUSION.1999.849846

Filename

849846