نتایج جستجو برای: field ionization

تعداد نتایج: 820587  

Journal: :Acta Physica Polonica A 1993

2006
C. L. O’Connell C. D. Barnes F.-J. Decker M. J. Hogan R. Iverson P. Krejcik R. Siemann D. R. Walz C. E. Clayton C. Huang D. K. Johnson C. Joshi W. Lu K. A. Marsh W. Mori M. Zhou

Plasma production via field ionization occurs when an incoming particle beam is sufficiently dense that the electric field associated with the beam ionizes a neutral vapor or gas. Experiments conducted at the Stanford Linear Accelerator Center explore the threshold conditions necessary to induce field ionization by an electron beam in a neutral lithium vapor. By independently varying the transv...

2010
Michael Schuricke Ganjun Zhu Jochen Steinmann Konstantinos Simeonidis Igor Ivanov Anatoli Kheifets Alexei N. Grum-Grzhimailo Klaus Bartschat Alexander Dorn Joachim Ullrich

Michael Schuricke,1 Ganjun Zhu,1 Jochen Steinmann,1 Konstantinos Simeonidis,1 Igor Ivanov,2 Anatoli Kheifets,2 Alexei N. Grum-Grzhimailo,3 Klaus Bartschat,4 Alexander Dorn,1 and Joachim Ullrich1 Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT 0200, Australia Insti...

Journal: :Physical review letters 2016
Nicolas Teeny Enderalp Yakaboylu Heiko Bauke Christoph H Keitel

Tunnel ionization belongs to the fundamental processes of atomic physics. The so-called two-step model, which describes the ionization as instantaneous tunneling at the electric field maximum and classical motion afterwards with zero exit momentum, is commonly employed to describe tunnel ionization in adiabatic regimes. In this contribution, we show by solving numerically the time-dependent Sch...

رحیمی فروشان, عباس, ریسمانچیان, مسعود, مرتضوی, یداله, پورتقی, غلامحسین, گلبابایی, فریده,

Introduction: Nowadays, in many different fields of chemical agents several experimental researches is being done on volatile organic compounds using gas chromatography, which is time consuming and expensive methods. Photo ionization detector as an alternative method is used by researchers in this field. This feasibility study was conducted to replace the photo ionization detector with gas chro...

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