scholarly journals Hot electron and x-ray production from intense laser irradiation of wavelength-scale polystyrene spheres

2007 ◽  
Vol 14 (6) ◽  
pp. 062704 ◽  
Author(s):  
H. A. Sumeruk ◽  
S. Kneip ◽  
D. R. Symes ◽  
I. V. Churina ◽  
A. V. Belolipetski ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
Intense Laser ◽  
Hot Electron ◽  
Polystyrene Spheres ◽  
X Ray ◽  
Wavelength Scale

Hard x-ray and hot electron production from intense laser irradiation of wavelength-scale particles

2001 ◽  
Vol 34 (10) ◽  
pp. L313-L320 ◽  
Author(s):  
T D Donnelly ◽  
M Rust ◽  
I Weiner ◽  
M Allen ◽  
R A Smith ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
Intense Laser ◽  
Hot Electron ◽  
X Ray ◽  
Electron Production ◽  
Wavelength Scale

scholarly journals Spectral analysis of x-ray emission created by intense laser irradiation of copper materialsa)

2012 ◽  
Vol 83 (10) ◽  
pp. 10E114 ◽  
Author(s):  
C. M. Huntington ◽  
C. C. Kuranz ◽  
G. Malamud ◽  
R. P. Drake ◽  
H.-S. Park ◽  
...  
Keyword(s):  
Spectral Analysis ◽  
Laser Irradiation ◽  
Intense Laser ◽  
X Ray

scholarly journals Hot electron refluxing in the short intense laser pulse interactions with solid targets and its influence on K-α radiation

Nukleonika ◽  
2015 ◽  
Vol 60 (2) ◽  
pp. 233-237 ◽  
Author(s):  
Vojtěch Horný ◽  
Ondřej Klimo
Keyword(s):  
Strong Electric Field ◽  
Target Material ◽  
Target Thickness ◽  
Intense Laser ◽  
Rear Side ◽  
Hot Electron ◽  
Fast Electrons ◽  
X Ray ◽  
Particle In Cell ◽  
Beam Interaction

Abstract Fast electrons created as a result of the laser beam interaction with a solid target penetrate into the target material and initialize processes leading to the generation of the characteristic X-ray K-α radiation. Due to the strong electric field induced at the rear side of a thin target the transmitted electrons are redirected back into the target. These refluxing electrons increase the K-α radiation yield, as well as the duration of the X-ray pulse and the size of the radiation emitting area. A model describing the electron refluxing was verified via particle-in-cell simulations for non-relativistic electron energies. Using this model it was confirmed that the effect of the electron refluxing on the generated X-ray radiation depends on the target thickness and the target material. A considarable increase of the number of the emitted K-α photons is observed especially for thin targets made of low-Z materials, and for higher hot electron temperatures.

Hot electron generation from intense laser irradiation of microtipped cone and wedge targets

2008 ◽  
Vol 15 (5) ◽  
pp. 052701 ◽  
Author(s):  
B. I. Cho ◽  
G. M. Dyer ◽  
S. Kneip ◽  
S. Pikuz ◽  
D. R. Symes ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
Intense Laser ◽  
Hot Electron ◽  
Electron Generation

Electron Heating by Ultra-Fast, Ultra-Intense Laser Irradiation of Wavelength-Scale Wires

CLEO: 2015 ◽  
2015 ◽  
Author(s):  
Kristina Serratto ◽  
Franki Aymond ◽  
Brandon Simon ◽  
Aaron Bernstein ◽  
Todd Ditmire
Keyword(s):  
Laser Irradiation ◽  
Intense Laser ◽  
Electron Heating ◽  
Wavelength Scale

Scanning luminescence x-ray microscopy: Progress toward selective staining using microspheres

1994 ◽  
Vol 52 ◽  
pp. 74-75
Author(s):  
C. Jacobsen ◽  
J. Fu ◽  
S. Mayer ◽  
Y. Wang ◽  
S. Williams
Keyword(s):  
Visible Light ◽  
Active Sites ◽  
Light Emission ◽  
Chinese Hamster ◽  
Polystyrene Spheres ◽  
Good Resistance ◽  
X Ray ◽  
Selective Staining ◽  
Visible Light Emission ◽  
Specific Labelling

In scanning luminescence x-ray microscopy (SLXM), a high resolution x-ray probe is used to excite visible light emission (see Figs. 1 and 2). The technique has been developed with a goal of localizing dye-tagged biochemically active sites and structures at 50 nm resolution in thick, hydrated biological specimens. Following our initial efforts, Moronne et al. have begun to develop probes based on biotinylated terbium; we report here our progress towards using microspheres for tagging.Our initial experiments with microspheres were based on commercially-available carboxyl latex spheres which emitted ~ 5 visible light photons per x-ray absorbed, and which showed good resistance to bleaching under x-ray irradiation. Other work (such as that by Guo et al.) has shown that such spheres can be used for a variety of specific labelling applications. Our first efforts have been aimed at labelling ƒ actin in Chinese hamster ovarian (CHO) cells. By using a detergent/fixative protocol to load spheres into cells with permeabilized membranes and preserved morphology, we have succeeded in using commercial dye-loaded, spreptavidin-coated 0.03μm polystyrene spheres linked to biotin phalloidon to label f actin (see Fig. 3).

Effect of a Laser irradiation on the vascularisation of safety and X-ray radiated bone

2007 ◽  
Author(s):  
Sophie Desmons ◽  
Caroline Delfosse ◽  
Philippe Rochon ◽  
Bruno Buys ◽  
Guillaume Penel ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
X Ray

scholarly journals Carbon-coated magnetic particles increase tissue temperatures after laser irradiation

2015 ◽  
Vol 08 (05) ◽  
pp. 1550018 ◽  
Author(s):  
Shupeng Liu ◽  
Na Chen ◽  
Fufei Pang ◽  
Zhengyi Chen ◽  
Tingyun Wang
Keyword(s):  
Laser Irradiation ◽  
Magnetic Particles ◽  
Laser Energy ◽  
Thermal Therapy ◽  
Vibrating Sample Magnetometer ◽  
X Ray Diffraction ◽  
X Ray ◽  
Fbg Sensor ◽  
Transmission Electron ◽  
Carbon Coated

Purpose: This work focused on the investigation the hyperthermia performance of the carbon-coated magnetic particles (CCMPs) in laser-induced hyperthermia. Materials and methods: We prepared CCMPs using the organic carbonization method, and then characterized them with transmission electron microscopy (TEM), ultraviolet-visible (UV-Vis) spectrophotometry, vibrating sample magnetometer (VSM) and X-ray diffraction (XRD). In order to evaluate their performance in hyperthermia, the CCMPs were tested in laser-induced thermal therapy (LITT) experiments, in which we employed a fully distributed fiber Bragg grating (FBG) sensor to profile the tissue's dynamic temperature change under laser irradiation in real time. Results: The sizes of prepared CCMPs were about several micrometers, and the LITT results show that the tissue injected with the CCMPs absorbed more laser energy, and its temperature increased faster than the contrast tissue without CCMPs. Conclusions: The CCMPs may be of great help in hyperthermia applications.

Hot-electron-induced instability in 0.5- mu m p-channel MOSFETs patterned using synchrotron X-ray lithography

1989 ◽  
Vol 10 (7) ◽  
pp. 327-329 ◽  
Author(s):  
C.C.-H. Hsu ◽  
L.K. Wang ◽  
M.R. Wordeman ◽  
T.H. Ning
Keyword(s):  
Hot Electron ◽  
X Ray
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