IMAGING AND BLACKBODY EMISSION-SPECTRA OF PARTICULATES GENERATED IN THE KRF-LASER ABLATION OF BN AND YBA2CU3O7-X

被引：85

作者：

GEOHEGAN, DB

机构：

[1] Solid State Division, Oak Ridge National Laboratory, Oak Ridge

来源：

APPLIED PHYSICS LETTERS | 1993年 / 62卷 / 13期

关键词：

D O I：

10.1063/1.108659

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Blackbody emission from ejecta following KrF-laser irradiation of YBa2Cu3O7-x (YBCO) and BN targets in vacuum has been observed for the first time using intensified charge-coupled-device (CCD) photography and gated photon counting. Temporally resolved emission spectra from particulates up to 2 cm from the target and from 10 mus to 1.5 ms after the laser pulse are attributed to blackbody radiation. The spectra are used to estimate temperatures between 2200 and 3200 K for ejecta from both BN and YBCO when irradiated at PHI248 = 3.5 J and 1.5 J cm-2, respectively. The measured cooling of the particles in vacuum is compared to a radiative cooling model.

引用

页码：1463 / 1465

页数：3

共 19 条

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