نتایج جستجو برای: pulsed electron beam

تعداد نتایج: 432420  

Journal: :Physical Review Special Topics - Accelerators and Beams 2010

Journal: :Applied optics 2008
Laurent Gallais Jérémie Capoulade Jean-Yves Natoli Mireille Commandré Michel Cathelinaud Cian Koc Michel Lequime

A comparative study is made of the laser damage resistance of hafnia coatings deposited on fused silica substrates with different technologies: electron beam deposition (from Hf or HfO(2) starting material), reactive low voltage ion plating, and dual ion beam sputtering. The laser damage thresholds of these coatings are determined at 1064 and 355 nm using a nanosecond pulsed YAG laser and a one...

2014
Ramazan Sahin Selcuk Akturk Ergun Simsek

The influence of beam intensity on laser ablation quality and ablation size is experimentally studied on graphene-coated silicon/silicon dioxide substrates. With an amplified femtosecond-pulsed laser system, by systematically decreasing the average power, periodic stripes with decreasing widths are ablated. Histogram analyses of the untouched and ablated regions of scanning electron microscope ...

2016
Rajesha K Nairy Narayana Yerol Nagesh N Bhat Utkarsha Desai Kapil Shirsath Usha Yadav Rajesh K. Chaurasia Sapra B K

OBJECTIVE In the present study an attempt was made to estimate coefficients of dose response curves for PCC aberrations induced by CalyculinA and Okadaic acid, using 60Co gamma radiation and 8 MeV pulsed electron beam for biodosimetry application. MATERIALS AND METHODS The modified method outlined by Puig et al. 2013 was used to conduct Calyculin A and Okadaic acid induced PCC assay in human ...

2011
G. Stancari G. Annala T. R. Johnson G. W. Saewert V. Shiltsev D. A. Still A. Valishev

Recent experimental studies at the Fermilab Tevatron collider have shown that magnetically confined hollow electron beams can act as a new kind of collimator for highintensity beams in storage rings. In a hollow electron beam collimator, electrons enclose the circulating beam. Their electric charge kicks halo particles transversely. If their distribution is axially symmetric, the beam core is u...

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