Measurement of material strength at high pressure

Yuan Yongteng; Miao Wenyong; Tu Shaoyong; Zhan Xiayu; Hao Yidan; Cao Zhurong; Zhang Wenhai; Wang Feng; Li Jin; Deng Bo; Yang Jiamin; Liu Shenye; Jiang Shaoen; Ding Yongkun

doi:3168

Volume 25 Issue 12

Dec. 2013

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Article Navigation > High Power Laser and Particle Beams > 2013 > 25(12): 3168-3172

Deng Wenhui, Tang Caixue, Chen Xianhua, et al. Path segment division and feed-rate solution in ion beam figuring[J]. High Power Laser and Particle Beams, 2013, 25: 3292-3296. doi: 3292

Citation:

Yuan Yongteng, Miao Wenyong, Tu Shaoyong, et al. Measurement of material strength at high pressure[J]. High Power Laser and Particle Beams, 2013, 25: 3168-3172. doi: 3168

Deng Wenhui, Tang Caixue, Chen Xianhua, et al. Path segment division and feed-rate solution in ion beam figuring[J]. High Power Laser and Particle Beams, 2013, 25: 3292-3296. doi: 3292

Citation:

Yuan Yongteng, Miao Wenyong, Tu Shaoyong, et al. Measurement of material strength at high pressure[J]. High Power Laser and Particle Beams, 2013, 25: 3168-3172. doi: 3168

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Measurement of material strength at high pressure

doi: 3168

1.
Research Center of Laser Fusion,CAEP,P.O.Box 919-986,Mianyang 621900,China

Received Date: 2013-07-22
Rev Recd Date: 2013-08-20
Publish Date: 2013-12-15

Abstract

Abstract

We studied material strength at high pressure ( more than 10 GPa) and high strain rates (106-108 s-1) in Al using the Shenguang Ⅲ prototype laser facility. The Al sample was maintained well below the melting temperature using a quasi-isentropic ramped drive based on a reservoir-gap-sample configuration. To measure the RT ripple growth, we used face-on radiography with a 4.7 keV laser driven Ti X-ray backlighter. This paper would show detailed designs and achieve the RT growth factors at different times. In the experiment, continuous phase plates (CPP) were used to improve the focus beam quality. The results show that CPP can effectively improve the uniformity of driven beam and the backlighter beam. Finally the experimental results reveal that the method to infer material strength by measuring RT instability growth is feasible at Shenguang Ⅲ prototype laser facility.
- quasi-isentropic compression,
- reservoir-gap-sample,
- material strength,
- dislocation,
- RT instability

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