Foo, B C Buschmann, B I Cufari, M Dannhoff, S G DeVault, A Evans, T E Johnson, T M Kunimune, J H Lawrence, Y Pearcy, J A
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Published in
The Review of scientific instruments
CR-39 proton radiography is an experimental charged-particle backlighter platform fielded and used at OMEGA and the NIF to image electric and magnetic fields in a subject plasma. Processing a piece of CR-39 involves etching it in hot NaOH, and the etch time can greatly impact the background-to-signal ratio (BSR) in low-fluence (≲4 × 104 cm-2) regio...
Pujol, Aurélien Berquez, Laurent Baudoin, Fulbert Payan, Denis
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The Review of scientific instruments
In space applications, space charge inside dielectric materials can lead to unwanted phenomena such as breakdown and electrostatic discharge. To prevent such incidents, the pulsed electroacoustic (PEA) device is employed to measure the space charge of dielectric samples. Unfortunately, most of the current PEA signal processing methods are inaccurat...
Le, H L Chen, N L Jiang, M Le Bris, C Charrière, C Boyé-Péronne, S Loison, J-C Jacovella, U Gans, B
Published in
The Review of scientific instruments
The VUv Laser for Considering Astrophysical and Isolated Molecules (VULCAIMs) setup [Harper et al., Phys. Chem. Chem. Phys. 24, 2777 (2022)] integrates a narrow-bandwidth tunable vacuum ultraviolet (VUV) and extreme ultraviolet (XUV) nanosecond-pulsed laser system (6-16 eV) and a photoelectron spectrometer, designed for recording high-spectral-reso...
Lu, Yimin Yang, Erjie Zhu, Jianhe Liu, Shenghui Cui, Kunpeng Guo, Hang Li, Liangbin
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The Review of scientific instruments
A stretching apparatus capable of conducting tensile tests over a broad strain rate range (10-3-250 s-1) and a wide temperature range (-75-250 °C) has been designed for polymeric materials, in particular the polymeric films. Specifically, this stretching apparatus can be combined with in situ ultrasmall-, small-, and wide-angle x-ray scattering (US...
Durocher, Mora Geppert-Kleinrath, Verena Danly, Christopher R Wilde, Carl H Saavedra, Gary J Freeman, Matthew S Fatherley, Valerie E Mendoza, Emily F Tafoya, Landon R Volegov, Petr L
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Published in
The Review of scientific instruments
The nuclear imaging system has been capturing neutron images of inertial confinement fusion (ICF) driven implosions for over a decade at the National Ignition Facility. This imaging system has evolved from one to three nearly orthogonal lines-of-sight, allowing for the study of three-dimensional shape characteristics of ignition shots. Limited-view...
Zhang, Yufei Chen, Ziyang Yu, Dongrui Niu, Jialin Chen, Xing Guo, Hong
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The Review of scientific instruments
Fiber-delay measurement is one of the key fundamental technologies in numerous fields. Here, we propose and experimentally demonstrate a high-precision and concise optical time delay measurement system based on the technique of linear optical sampling, reaching the precision better than 100 fs under averaging. The use of only two optical frequency ...
Khelifi, Wijden Canneson, Damien Berthe, Maxime Legendre, Sébastien Coinon, Christophe Desplanque, Ludovic Wallart, Xavier Biadala, Louis Grandidier, Bruno Capiod, Pierre
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The Review of scientific instruments
Raman spectroscopy is well-suited for the characterization of semiconductor materials. However, due the weakness of the Raman signal, the studies of thin semiconductor layers in complex environments, such as ultrahigh vacuum, are rather scarce. Here, we have designed a Raman apparatus based on the use of a fiber optic probe, with a lens collecting ...
Wang, Siheng Berrada, Meryem Chao, Keng-Hsien Lai, Xiaojing Zhu, Feng Zhang, Dongzhou Chariton, Stella Prakapenka, Vitali B Sinogeikin, Stanislav Chen, Bin
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Published in
The Review of scientific instruments
Externally heated diamond anvil cells provide a stable and uniform thermal environment, making them a versatile device to simultaneously generate high-pressure and high-temperature conditions in various fields of research, such as condensed matter physics, materials science, chemistry, and geosciences. The present study features the Externally Heat...
Mikhailov, Igor F Mikhailov, Anton I Borisova, Svetlana S Fomina, Larisa P
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The Review of scientific instruments
A method for correcting the matrix effect by measuring the intensity of fluorescent radiation and its absorption by the sample material in the same x-ray optical scheme is proposed. The use of a complex secondary Ag-Ge emitter as a primary radiation source provides a low detection limit for a wide range of chemical elements from Ca (Z = 20) to Mo (...
Xu, Guoxiao Kang, Ning Cui, Zijian Liu, Huiya Lei, Anle Zhou, Shenlei
Published in
The Review of scientific instruments
In this work, a design for the generation of a 4ω (263-nm) probe converted from a 1ω (1053-nm) laser is presented. The design is based on a beta-barium borate and potassium dihydrogen phosphate two-step frequency-conversion process. A suitable configuration for Nomarski interferometry based on the 4ω probe is proposed, for measuring the electron de...
