The effect of visible light irradiation on positronium formation in polyethylene at low temperature

被引：50

作者：

Ito, Y

Hirade, T

Hamada, E

Suzuki, T

Ito, Y

机构：

[1] KEK, High Energy Accelerator Res Org, Tanasi Branch, Tokyo 3191106, Japan

[2] Japan Atom Energy Res Inst, Dept Mat Sci, Naka, Ibaraki 3191106, Japan

[3] Grad Univ Adv Studies, High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki, Japan

[4] Univ Tokyo, Res Ctr Nucl Sci & Technol, Naka, Ibaraki 3191106, Japan

来源：

ACTA PHYSICA POLONICA A | 1999年 / 95卷 / 04期

关键词：

D O I：

10.12693/APhysPolA.95.533

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The effect of visible light exposing on the ortho-positronium formation in polyethylene was studied. Lifetime spectra of positrons in polyethylene were measured in the temperature range between 50 K and 370 K. It was observed that the visible light quenches the enhancement of ortho-positronium intensity (I-3) at lower temperature than ca. 250 K - the glass transition temperature of polyethylene. On the other hand, the lifetime of ortho-positronium component (tau(3)) was not affected by the presence of the visible light.

引用

页码：533 / 538

页数：6

共 16 条

[1] GLASS TRANSITION OF POLYETHYLENE - VOLUME RELAXATION [J].