The laser shock station in the dynamic compression sector. I

Journal Article · Fri May 10 00:00:00 EDT 2019 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.5088367· OSTI ID:1542978

Wang, Xiaoming ^[1]; Rigg, Paulo ^[1]; Sethian, John ^[1]; Sinclair, Nicholas  ^[1]; Weir, Nicholas ^[1]; Williams, Brendan ^[1]; Zhang, Jun ^[1]; Hawreliak, James ^[2]; Toyoda, Yoshimasa ^[2]; Gupta, Yogendra  ^[2]; Li, Yuelin ^[3]; Broege, Douglas ^[4]; Bromage, Jake ^[4]; Earley, Robert  ^[4]; Guy, Dale ^[4]; Zuegel, Jonathan  ^[4]

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1. Washington State Univ., Argonne, IL (United States)
2. Washington State Univ., Pullman, WA (United States)
3. Washington State Univ., Argonne, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
4. Univ. of Rochester, NY (United States)

The Laser Shock Station in the Dynamic Compression Sector [Advanced Photon Source (APS), Argonne National Laboratory] links a laser-driven shock compression platform with high energy x-ray pulses from the APS to achieve in-situ, time-resolved x-ray measurements (diffraction and imaging) in materials subjected to well-characterized, high stress, short duration planar shock waves. Additionally, the combination of this station and the other DCS experimental stations provides a unique and versatile experimental facility to study condensed state phenomena by undertaking real-time, multi-scale measurements in materials subjected to a wide range of shock amplitudes (to above ~350 GPa) and time-durations (~10 ns to 1 μs). The Laser Shock Station uses a 100 joule, 5-17 ns, 351 nm frequency tripled Nd:glass laser with programmable pulse shaping and focal profile smoothing for maximum precision. The laser is capable of a shot every 30 minutes. The interaction chamber contains multiple ports for simultaneous diagnostics, a sample holder that allows sequential exposure for 14 samples without breaking vacuum, the capability to vary the angle between the x-ray beam and laser beam by 135°, and the ability to translate to select one of two types of x-ray beams. X-ray data can be taken with a temporal resolution of ~90 psec. Highly reproducible, planar shocks can be propagated in samples to undertake precise and well-characterized experiments. In a series of ten shots, the absolute variation in the time the shock breaks out at the back of the sample is less than 500ps and the variation in peak particle velocity at the sample/window interface is 4.3%. Lastly, this paper describes the entire DCS Laser Shock Station, including sample fabrication and diagnostics, as well as representative experimental results from shock compressed tantalum to demonstrate the excellent quality of x-ray diffraction data in solid tantalum and to establish the stress for tantalum melting.

• Research Organization: Washington State Univ., Argonne, IL (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP)
• Grant/Contract Number: NA0002442; AC02-06CH11357
• OSTI ID: 1542978
• Journal Information: Review of Scientific Instruments, Vol. 90, Issue 5; ISSN 0034-6748
• Publisher: American Institute of Physics (AIP)
• Country of Publication: United States
• Language: English

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