skip to main content

SciTech ConnectSciTech Connect

Title: A mass quadrupole spectrometry investigation on proton emission by nanosecond laser ablation

A nanosecond pulsed Nd:YAG laser operating at the fundamental wavelength of 1064 nm and at an intensity of about 10{sup 10} W/cm{sup 2} was employed to irradiate hydrogenated polymers in vacuum. The produced plasma was characterized in terms of thermal and Coulomb interactions evaluating the equivalent temperature and the acceleration voltage developed in the non-equilibrium plasma core. Particles emission along the normal to the target surface was investigated by measuring, with the Hiden EQP 300 mass quadrupole spectrometer, ion energy distributions and fitting experimental data with the “Coulomb-Boltzmann-shifted” function. Time-of-flight technique was employed in order to measure the proton energy and yield. A comparison between experimental results is presented and discussed, with a special regard to the protons emission.
Authors:
 [1]
  1. University of Messina, Department of Physics and Science of the Earth (Italy)
Publication Date:
OSTI Identifier:
22472449
Resource Type:
Journal Article
Resource Relation:
Journal Name: Plasma Physics Reports; Journal Volume: 41; Journal Issue: 2; Other Information: Copyright (c) 2015 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ABLATION; ACCELERATION; COMPARATIVE EVALUATIONS; ELECTRIC POTENTIAL; EMISSION; ENERGY SPECTRA; HYDROGENATION; IONS; LASER-PRODUCED PLASMA; NEODYMIUM LASERS; NON-EQUILIBRIUM PLASMA; PROTONS; TIME-OF-FLIGHT METHOD