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2 edition of Studies of laser generated plasmas relevant to soft X ray laser research. found in the catalog.

Studies of laser generated plasmas relevant to soft X ray laser research.

Richard Ewing Corbett

Studies of laser generated plasmas relevant to soft X ray laser research.

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Published .
Written in English


Edition Notes

Thesis (Ph. D.)--The Queen"s University of Belfast, 1987.

The Physical Object
Pagination1 v
ID Numbers
Open LibraryOL19800287M

@article{osti_, title = {MIT modular x-ray source systems for the study of plasma diagnostics}, author = {Coleman, J W and Wenzel, K W and Petrasso, R D and Lo, D H and Li, C K and Lierzer, J R and Wei, T}, abstractNote = {Two new x-ray source systems are now on line at our facility. Each provides an {ital e}-beam to 25 kV. Targets are interchangeable between machines, and four x-ray. Laser plasma soft x-ray sources have advantages such as high intensity and short pulse duration and a contact x-ray microscope coupled with a laser plasma soft x-ray source has the potential to capture an x-ray image of biological specimens in a single shot flash imaging without any artificial treatment such as staining, fixation, and slicing. Papers are presented on XUV free electron laser oscillators, transition radiation as a coherent soft X-ray source, soft X-ray interferometry and holography, X-ray Fourier optics, optical gain at nm in a laser-ablated inner-shell photoionization-pumped indium plasma, and recent progress in soft X-ray laser development at Princeton. Get this from a library! Laser Interaction and Related Plasma Phenomena: Volume 6. [Heinrich Hora; George H Miley] -- This 6th International Workshop in the series starting in was held at the Naval Postgraduate School in Monterey, California from October, under the .


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Studies of laser generated plasmas relevant to soft X ray laser research. by Richard Ewing Corbett Download PDF EPUB FB2

Available from UMI in association with The British Library. The work presented in this thesis is mainly concerned with studies related to two different schemes for producing laser action in the X-VUV spectral region using highly ionized laser-generated plasmas as the amplifying media.

The sodium-neon scheme involves the pumping of the 1s^2 ^1S-1s4p ^1P transition at A in NeIX by Author: Richard Ewing Corbett. Studies related to two different schemes for producing laser action in the X-VUV spectral region using highly ionized laser generated plasmas as the amplifying media are discussed.

The sodium-neon scheme involves the pumping of the 1s (exp 2) (1)S- s4p (1)P transition at A in NeIX by radiation from the 1s (exp 2) (1)S-1s2p (1)P transition at A in NaX, to give population inversions Author: Richard Ewing Corbett. A Study of Laser Plasmas as X-Ray Sources in the 1–10 keV Spectral Region The most important properties of laser-plasma X-ray sources are discussed with particular attention to the latest.

Computed plasma parameters corresponding to Si and Cr plasmas generated by 17 ␮ J energy, ns duration soft-x-ray laser pulse irradiation ͑ ␭ = nm ͒ of solid targets.

Soft X-ray spectroscopy can be carried out in commercially available spectrometers if the following simple changes are made: (1) an open window gas-discharge X-ray tube (e.g.

CGR Elent) is used. We measured Studies of laser generated plasmas relevant to soft X ray laser research. book characteristics of the x-ray emission from plasmas produced at the focus of a high-power (~10 GW) laser.

X-ray spectra in the keV region show that the plasmas contain. We describe a laser-driven x-ray plasma source designed for ultrafast x-ray absorption spectroscopy. The source is comprised of a 1 kHz, 20 W, femtosecond pulsed infrared laser and a water target.

We present the x-ray spectra as a function of laser energy and pulse duration. Additionally, we investigate the plasma temperature and photon flux as we vary the laser energy. The brilliance of a laser-produced soft X-ray source is enhanced for gaseous target concepts.

In contrast to solid or liquid target materials, these sources are clean and versatile but provide a comparably low conversion efficiency of laser energy into EUV and soft X-ray radiation.

The basic idea is to induce supersonic effects in the gas jet, leading to a local increase of the particle. Laser produced plasma (LPP) soft x-ray and extreme ultraviolet sources utilize various types of targets.

Some of them are based on gaseous targets. The most important disadvantage of such targets is the very limited number of elements that can be used in the gaseous form under normal conditions, including chemical compounds in the gaseous state.

Therefore, we conclude that efficient soft x-ray emission from the high ion density region occurs at an electron temperature of around eV at nm laser and eV at nm laser for ps pulse, which corresponds to a laser intensity of about × 10 13 W/cm 2 by the power scaling shown in Figs.

2(a) and 2(b). This paper gives an overview of recent soft x-ray laser research at Colorado State University. Progress related to capillary discharge source development includes the observation of emission from the nm laser line of Nickel-like Cd in a plasma column generated by a high power capillary discharge.

4 February Laser - Generated Soft X-Rays. Sigel, K. Eidmann, J. Meyer ter-Vehn The present status of the theoretical and experimental studies on the laser generation of soft x-rays in open and closed geometry, performed at the Max-Planck-Institut fiir Quantenoptik (MPQ) at Garching, is reviewed.

X ray laser research at Advanced. The intense soft x-ray light source using the supersonic expansion of the mixed gas of He and CO(2), when irradiated by a femtosecond Ti: sapphire laser pulse, is. 14 January Time-Resolved X-Ray Spectrographic Instrumentation For Laser Fusion And X-Ray Laser Studies.

Richardson, G. Gregory, S. A A soft x-ray, transmission grating, streak spectrograph (resolution ~ Å) time-resolves spectra in the Å range.

dense plasmas in laser fusion and x-ray laser research will be. Studies of laser generated plasmas relevant to soft X-ray laser research. Author: Corbett, Richard Ewing. ISNI: Awarding Body: Queen's University of Belfast Current Institution: Queen's University Belfast Date of Award: Availability of Full Text.

Kuehl, T. et al. Optimization of the non-normal incidence, transient pumped plasma X-ray laser for laser spectroscopy and plasma diagnostics at the facility for antiproton and ion research. Introduction. Coherent x-ray laser has various applications in scientific and engineering fields [, ], including x-ray microscope, x-ray photoelectron spectroscopy, x-ray lithography, and x-ray creation of a population inversion leading to plasma x-ray laser oscillation, two methods have been proposed and succeeded in the lasing actions, so far, that is, collisional.

In this study, a laser plasma source of soft X-rays based on a gas puff target, developed for radiobiology research, is described. Opposite to the source described by Davídková et al. [18], that was a single-shot X-ray source driven by a high-power laser, the source described here represents a compact, handy device.

This study was supported by the X-ray Free Electron Laser Utilization Research Project and the X-ray Free Electron Laser Priority Strategy Program of the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT), by the Proposal Program of SACLA Experimental Instruments of RIKEN, by the Japan Society for the Promotion of.

The X-ray conversion efficiencies in various spectral ranges are presented. It is possible to obtain from a laser plasma source a well characterized X-ray spectra.

As an example of application, the exposure of P.B.S. resist is studied both in the XUV and soft X-ray ranges. Laser-plasma-based accelerators are now able to provide the scientific community with novel high-energy light sources that are essential to study high-energy density matter, inertial confinement fusion, astrophysical systems, and fundamental plasma physics.

A few fs X-ray pulses have been generated via backward Thomson scattering from a few fs electron bunches made by a bunch compression chicane. TW laser and microtron as a MeV electron beam source will be prepared, and the laser and the electron beam will be interacted as a hard X-ray source.

Soft X-ray may be generated via laser. 13 hours ago  After the laser-based preparation of hectoliters of colloid and more than 2 kg of PtPd/Al 2 O 3 wash coat, the laser-generated catalysts were benchmarked against an industry-relevant reference catalyst.

The conversion of CO by laser-generated catalysts was found to be equivalent to the reference, while improved activity during NO oxidation was.

Soft X-rays have great potential for use in a wide variety of applications, including the semiconductor industry and the life sciences. X-Rays from Laser Plasmas: Generation and Applications focuses exclusively and in detail on the science and technology of soft X-rays produced with non-synchrotron sources.

Using a minimum of mathematical formulae, it discusses how such X-rays can be. Thermal x-ray emission from hot plasmas, produced by energetic laser pulses at intensities of order 10 15 W/cm 2, becomes increasingly inefficient for photon energies above 10 keV. 46 L. Ruggles, J. Porter, Jr., P. Rambo, W.

Simpson, M. Vargas, G. Bennett, and I. Smith, “ Measurements of 4–10 keV x-ray production with the z-beamlet. The X-ray beam is generated from a plasma produced focusing a Nd-Yag/glass laser beam on mylar or yttrium target. At the wavelength of nm, a monochromatic soft X-rays beam was collected by multilayer spherical mirrors.

In the Water Window region, Yttrium represents a good X-ray. Analysis of plasma enhanced pulsed laser deposition of transition metal oxide thin films using medium energy ion scattering Rossall, A. K., van den Berg, J. A., Meehan, D., Rajendiran, S.

& Wagenaars, E., 1 Jul Article in Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms.

First stage in the development of a soft-X-ray reflection imaging microscope in the Schwarzschild configuration using a soft X-ray laser at 182 nm. Opt. Lett. 17, – Abstract. The Langmuir frequency of the dense plasma focus matches closely the CO 2 laser frequency; consequently, a strong absorption is expected within the volume of contained plasma.

For thermo-nuclear radiation effects studies, laser assisted plasma focus can be employed for fusion neutron or soft X-ray pulse generation.

Laser-produced plasmas are a method of creating matter at conditions that approach those believed to occur in brown dwarfs 8,9 enabling laboratory studies of the plasma in these systems detail in pulsed power plasmas but mostly in laser produced plasmas.

Such studies are very important for the achievement of better understanding of non-thermal plasmas and electron beams in general and from Z-pinches in particular and for development of efficient x-ray sources and new diagnostics of both ”hot” HEDLP and warm dense matter.

The soft X-ray signal duration measured by means of XRD is of 5–7 ns in experiments using the ns long chirped laser pulse. Estimations of the amount of X-ray energy generated in the hohlraum using measured duration of the soft X-ray signal, the hohlraum plasma size and estimated equivalent radiative temperature, give the value of 40 J.

soft x-ray diagnostics with microplasma generation by intense NIR laser pulses remains a challenge due to the initially incomplete spatial heating. WDM targets also represent laboratory systems to simulate conditions found in planets and are thus relevant for astrophysical research [30].

Finally, the short wavelength emission from particles in. @article{osti_, title = {Time-resolved soft x-ray spectra from laser-produced Cu plasma}, author = {Cone, K V and Dunn, J and Baldis, H A and May, M J and Purvis, M A and Scott, H A and Schneider, M B}, abstractNote = {The volumetric heating of a thin copper target has been studied with time resolved x-ray spectroscopy.

The copper target was heated from a plasma produced using the. X-Ray Lasers, Grasers, and Nuclear Pumped Lasers --Time and Resolved Spectroscopy of X-ray Laser Experiments --Theory and Analysis of Soft X-ray Laser Experiments --Hydrodynamic Aspects of X-ray Laser Targets --Dynamical Process of the Second Harmonic Emission From Pico-Second Laser Produced Plasmas --Laser Generated X-ray Studies Relevant to.

State of the art X-ray Free Electron Laser facilities currently provide the brightest X-ray pulses available, typically with mJ energy and several hundred femtosecond duration. Here. Mechanism of soft x-ray continuum radiation from low-energy pinch discharges of hydrogen and ultra-low field ignition of solid fuels.

Plasma Science and Technology, Vol. 19, Issue. 9, p. Plasma Science and Technology, Vol. 19, Issue. 9, p. Ciricosta et al.’s experiments make use of a different type of laser: an x-ray free-electron laser (XFEL).

X-ray lasers heat solids differently than infrared lasers do. X rays are a kilo-electron-volt or more and can directly knock out the core electrons from atoms, while infrared light primarily excites only valence and plasma electrons. Laser-generated plasmas are important for the creation of X-ray lasers and attosecond light pulses, but observing the internal dynamics of a plasma is difficult.

This paper reports a. PURPOSE: To evaluate the use of x-ray imaging performed with a high-power laser system in biologic and medical studies. MATERIALS AND METHODS: A compact terawatt laser system based on chirped pulse amplification in titanium-doped sapphire was used.

X rays were generated by irradiating a high-atomic-number target (tantalum). The list of powerful X-ray sources has increased in recent years to include transient-collisional plasma X-ray las19, powerful X-ray free-electron-laser .Soft x-ray contact microscopy (SXCM) is a form of x-ray lithography, however, the biological cell is imaged instead of an electron-cut microcircuit mask.

The contrast mechanism is based upon the x-ray absorption lengths of carbon and nitrogen. The soft x-rays were generated by a conventional laboratory source or a laser-induced plasma x-ray source.Get this from a library! Laser Interaction and Related Plasma Phenomena: Volume [George H Miley; Heinrich Hora] -- Edward Teller Medalists: Laser Fusion Research in 30 Years (C.

Yamanaka). New Basic Physics Derived from Laser Plasma Interaction (H. Hora). Lasers: Demonstration of a Nuclear FlashPumped Iodine.