Dr. Jun Feng Profile

Dr. Jun Feng

at Lawrence Berkeley National Lab

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Author

Publications (5)

Proceedings Article | 9 September 2016 Paper

Design and implementation of precise x-ray metrology to control a 45-cm long x-ray deformable mirror

Lisa Poyneer, Jaime Ruz Armendariz, Jun Feng, Weilun Chao, Jessie Jackson, James Nasiatka, Todd Decker

Proceedings Volume 9965, 99650G (2016) https://doi.org/10.1117/12.2236568

KEYWORDS: X-rays, Metrology, X-ray optics, Charge-coupled devices, Sensors, Photons, Signal to noise ratio, Calibration, Fringe analysis, Interferometers

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Proceedings Article | 31 August 2015 Paper

Precision fabrication of large area silicon-based geometrically enhanced x-ray photocathodes using plasma etching

Y. Opachich, N. Chen, P. Bell, D. Bradley, J. Feng, A. Gopal, T. Hilsabeck, E. Huffman, J. Koch, O. Landen, A. MacPhee, S. Nagel, S. Udin

Proceedings Volume 9591, 95910O (2015) https://doi.org/10.1117/12.2186622

KEYWORDS: X-rays, Sensors, Silicon, Electrons, Plasma etching, X-ray detectors, Prototyping, Spatial resolution, National Ignition Facility, Quantum efficiency

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Proceedings Article | 12 May 2015 Paper

Tests of photocathodes for high repetition rate x-ray FELs at the APEX facility at LBNL

Fernando Sannibale, Daniele Filippetto, Houjun Qian, Christos Papadopoulos, Russell Wells, Toby Kramasz, Howard Padmore, Jun Feng, James Nasiatka, Ruixuan Huang, Max Zolotorev, John Staples

Proceedings Volume 9512, 95121N (2015) https://doi.org/10.1117/12.2181912

KEYWORDS: Quantum efficiency, Free electron lasers, X-rays, Electron beams, Nose, Ions, X-ray technology, Light sources, Semiconductor materials, Space operations

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Proceedings Article | 21 September 2005 Paper

An ultra-fast x-ray streak camera for the study of magnetization dynamics

J. Feng, W. Wan, J. Qiang, A. Bartelt, A. Comin, A. Scholl, J. Byrd, R. Falcone, G. Huang, A. MacPhee, J. Nasiatka, K. Opachich, D. Weinstein, T. Young, H. Padmore

Proceedings Volume 5920, 592009 (2005) https://doi.org/10.1117/12.618749

KEYWORDS: Streak cameras, X-rays, Temporal resolution, Ultrafast phenomena, Switches, Magnetism, Cameras, Imaging systems, Digital signal processing, X-ray magnetic circular dichroism

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Proceedings Article | 21 September 2005 Paper

Ultrafast magnetization dynamics studies using an x-ray streak camera

A. Bartelt, A. Comin, J. Feng, J. Nasiatka, H. Padmore, A. Scholl, A. Young

Proceedings Volume 5920, 592019 (2005) https://doi.org/10.1117/12.640528

KEYWORDS: X-rays, Magnetism, Streak cameras, Picosecond phenomena, X-ray magnetic circular dichroism, Pulsed laser operation, Ultrafast phenomena, Ultraviolet radiation, Femtosecond phenomena, Polarization

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