NEUTRON PHOTON DAMAGE ASSESSMENT OF COMMERCIAL PLASTIC SCINTILLATING FIBERS

被引：6

作者：

DUNN, WL

ELLEMAN, TS

GRIMES, A

REUCROFT, S

YASUDA, T

机构：

[1] N CAROLINA STATE UNIV,DEPT NUCL ENGN,RALEIGH,NC 27695

[2] NORTHEASTERN UNIV,DEPT PHYS,BOSTON,MA 02115

来源：

RADIATION PHYSICS AND CHEMISTRY | 1993年 / 41卷 / 1-2期

关键词：

PLASTIC SCINTILLATING FIBERS; NEUTRONS; FLUENCE; ATTENUATION LENGTH; RADIATION DAMAGE;

D O I：

10.1016/0969-806X(93)90060-8

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Five types of plastic scintillating fibers from three manufacturers were analyzed before and after mixed-field (neutron/photon) exposures in the PULSTAR reactor at North Carolina State University. The fibers received fast neutron fluences between 2.5x10(12) and 2.0x10(14) cm-2, which are comparable to multi-year fluences expected within detectors for the Superconducting Super Collider (SSC). The gamma-my doses delivered were between about 7 and 560 krad, which are generally below the doses considered to be required to induce significant permanent damage in the types of fibers tested. Thus, we were able to make preliminary assessments of neutron effects on light output and attenuation length. The results indicate that, although there is some variability depending on fiber type and manufacturer, significant long-term optical degradation is induced in fibers exposed to fast neutron fluences above approximately 2x10(13) cm-2.

引用

页码：225 / 236

页数：12