Production of a diffuse very high reflectivity material for light collection in nuclear detectors

被引：16

作者：

Pichler, BJ

Lorenz, E

Mirzoyan, R

Weiss, L

Ziegler, SI

机构：

[1] Max Planck Inst Phys, Werner Heisenberg Inst, D-80805 Munich, Germany

[2] Tech Univ Munich, Klinikum Rechts Isar, Nukl Med Klin & Poliklin, D-81675 Munich, Germany

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2000年 / 442卷 / 1-3期

关键词：

D O I：

10.1016/S0168-9002(99)01245-0

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A diffuse very high reflectivity material, based on polytetrafluorethylene (PTFE) for optimization of light-collection efficiency has been developed. PTFE powder was used to produce reflector block material. The powder was pressed with 525 kPa in a form and sintered at 375 degrees C. The reflectivity was above 98% within the spectral range from 350 to 1000 nm. The blocks of this material are machinable with saws, drilling and milling machines. The reflector is used as a housing for scintillating crystals in a nuclear medicine application (small animal positron emission tomograph). It is also used as a light collector in very high-energy gamma-ray astrophysicas experiments, HEGRA and MAGIC. The application of this inexpensive, easy to make diffuse reflector may allow the optimization of light collection in a wide range of low-level light-detector configurations. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：333 / 336

页数：4