Vita Publications

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2020-06-11
13:36
[PUBDB-2020-02335] Journal Article

Imaging Atomic Structure and Dynamics with Ultrafast X-ray Scattering
Science / Science now 316(5830), 1444 - 1448 () [10.1126/science.1135923]  GO
Measuring atomic-resolution images of materials with x-ray photons during chemical reactions or physical transformations resides at the technological forefront of x-ray science. New x-ray–based experimental capabilities have been closely linked with advances in x-ray sources, a trend that will continue with the impending arrival of x-ray–free electron lasers driven by electron accelerators. [...]
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ddc:320

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2020-05-07
14:40
[PUBDB-2020-01752] Journal Article/Contribution to a conference proceedings

Air shower simulations
COSMIC RAYS AND ASTROPHYSICS: Proceedings of the 3rd School on Cosmic Rays and Astrophysics, ArequipaArequipa, Peru, 25 Aug 2008 - 5 Sep 20082008-08-252008-09-05 AIP conference proceedings 1123, 150-165 ()  GO
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ddc:530

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2020-03-02
13:29
OpenAccess [PUBDB-2020-00920] Journal Article
et al
Acceleration of High Charge Ion Beams with Achromatic Divergence by Petawatt Laser Pulses
We present a study of laser-ion acceleration, where an increased laser spot size leads to sheath field geometries that accelerate ion beams of narrow and achromatic divergence at unprecedented charge densities, resulting from the high aspect ratio of the laser spot size to the acceleration distance. Matching the laser pulse length to the transverse laser spot size mitigated laser sweeping across the target front side and optimized the acceleration, with maximum energies deviating significantly from a linear intensity scaling..
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ddc:530

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2020-02-24
14:19

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2020-02-21
14:16

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2020-02-21
14:14

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2020-02-20
15:45
[PUBDB-2020-00809] Journal Article
et al
High-sensitivity plasma density retrieval in a common-path second-harmonic interferometer through simultaneous group and phase velocity measurement
Physics of plasmas 26(2), 023106 - () [10.1063/1.5080269]  GO
Precise measurements of the plasma density in ionized gas cells and discharged capillaries are critical to the design and operation of plasma-based accelerators, active plasma lenses, and plasma-based radiation sources. In this manuscript, a spectral-domain common-path second-harmonic interferometer is upgraded with the simultaneous measurement of the group and phase velocity, allowing for high-sensitivity density characterization (from the phase velocity advance) without the need for phase tracking from zero-density (enabled by the group velocity delay). [...]
ddc:530

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2020-02-20
14:48

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2020-02-20
14:47

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2020-02-14
11:03

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