Zobrazeno 1 - 10
of 263
pro vyhledávání: '"John Nees"'
Autor:
Lauren A. Finney, Patrick J. Skrodzki, Nicholas Peskosky, Milos Burger, John Nees, Karl Krushelnick, Igor Jovanovic
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-11 (2022)
Abstract Plants and other photosynthetic organisms have been suggested as potential pervasive biosensors for nuclear nonproliferation monitoring. We demonstrate that ultrafast laser filament-induced fluorescence of chlorophyll in the green alga Chlam
Externí odkaz:
https://doaj.org/article/5c63eb4753444850b8d8a17751b69aaa
Publikováno v:
Remote Sensing, Vol 12, Iss 8, p 1281 (2020)
Optical measurement techniques can address certain important challenges associated with nuclear safety and security. Detection of uranium over long distances presents one such challenge that is difficult to realize with traditional ionizing radiation
Externí odkaz:
https://doaj.org/article/52f0faea93dc44b6a126b5a42fe074ca
Autor:
Alexander Thomas, Mario Balcazar, Hai-En Tsai, Tobias Ostermayr, Matthew Trantham, Sahel Hakimi, Paul Campbell, Yong Ma, R Jacob, Rachel Young, Paul King, Raspberry Simpson, Elizabeth Grace, Brendan Kettle, Eva Los, Carl Schroeder, Eric Esarey, John Nees, Anthony Gonsalves, Felicie Albert, Jeroen Van Tilborg, Stuart Mangles, Cameron Geddes, Carolyn Kuranz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a9d0a3b93fa230b04aae10d8d0c7cf35
https://doi.org/10.2172/1900505
https://doi.org/10.2172/1900505
Publikováno v:
Scientific Reports, Vol 10, Iss 1, Pp 1-11 (2020)
Scientific Reports
Scientific Reports
We investigate MeV-level attosecond electron bunches from ultrashort-pulse laser-solid interactions through similarities between experimental and simulated electron energy spectra. We show measurements of the bunch duration and temporal structure fro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::abaa95fee7c57cb5cb7a0fb9d799878f
http://link.springer.com/article/10.1038/s41598-020-75418-6
http://link.springer.com/article/10.1038/s41598-020-75418-6
Autor:
John Nees, Karl Krushelnick, C. I. D. Underwood, G. Gan, C. D. Murphy, Z. H. He, A. G. R. Thomas
Publikováno v:
Laser and Particle Beams. 38:128-134
In this paper, we characterize a high repetition-rate regenerating plasma mirror produced by the thin film of liquid formed when two laminar streams collide. The use of a flowing liquid film is inexpensive and the interaction surface refreshes automa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d171d50a11fdc27b24a09938b312654b
https://doi.org/10.1017/s0263034620000129
https://doi.org/10.1017/s0263034620000129
Publikováno v:
Conference on Lasers and Electro-Optics.
We demonstrate the production of ultra-broadband long-wave infrared pulses spanning the 8–12 µm atmospheric window using chirped-pulse difference-frequency generation optimized by genetic algorithm.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12a6a99d0015627f60d80e7bde603a7c
https://doi.org/10.1364/cleo_si.2022.sth4e.4
https://doi.org/10.1364/cleo_si.2022.sth4e.4
Autor:
Lauren A. Finney, Nicholas Peskosky, Patrick J. Skrodzki, Milos Burger, John Nees, Karl Krushelnick, Igor Jovanovic
Publikováno v:
Conference on Lasers and Electro-Optics.
We demonstrate that ultrafast laser filaments can excite chlorophyll fluorescence in green algae and show that it is a promising technique for remote detection of uranium exposure from the shape of the fluorescence time profile.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::effb64fa4794b59c6b99fcd2ab94c39c
https://doi.org/10.1364/cleo_at.2022.am5m.5
https://doi.org/10.1364/cleo_at.2022.am5m.5
Autor:
L. A. Nagel, L. A. Finney, Milos Burger, John Nees, P. J. Skrodzki, Igor Jovanovic, Robert Nawara
Publikováno v:
Optics express. 29(21)
We demonstrate a novel single-shot method to determine the detonation energy of laser-induced plasma and investigate its performance. This approach can be used in cases where there are significant shot-to-shot variations in ablation conditions, such
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca843155d29827d52f022da16ef307da
https://pubmed.ncbi.nlm.nih.gov/34809159
https://pubmed.ncbi.nlm.nih.gov/34809159
Autor:
Jinpu Lin, Adrian Lucero, Andreas Schmitt-Sody, John Nees, Karl Krushelnick, Alexander Englesbe
Publikováno v:
Applied optics. 60(25)
We demonstrate that is it possible to optimize the yield of microwave radiation from plasmas generated by laser filamentation in atmosphere through manipulation of the laser wavefront. A genetic algorithm controls a deformable mirror that reconfigure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::082ae3037d37755c437ce69f5f816527
https://pubmed.ncbi.nlm.nih.gov/34613200
https://pubmed.ncbi.nlm.nih.gov/34613200
Autor:
Tobias Ostermayr, Isabella Pagano, Jens Hartmann, P. Hilz, Anthony Gonsalves, Cameron Geddes, Katia Parodi, Csaba D. Tóth, Kei Nakamura, Bjorn Hegelich, John Nees, Eric Esarey, Yong Ma, Axel Huebl, Franz Siegfried Englbrecht, Raspberry Simpson, Felicie Albert, Hai-En Tsai, J. Gebhard, Carolyn Kuranz, Alexander Thomas, Joerg Schreiber, P. M. King, Christian Kreuzer, Elizabeth Grace, Daniel Haffa, Mario Balcazar, Carl Schroeder
Publikováno v:
Laser Acceleration of Electrons, Protons, and Ions VI.
Radiographic imaging is an omnipresent tool in basic research and applications in industry, material science and medical diagnostics. Often, the information contained in more than one modality can be valuable, but difficult to access simultaneously.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f684a9a7b4e6a94cf8fab2f6d8155ee
https://doi.org/10.1117/12.2592671
https://doi.org/10.1117/12.2592671