Electron temperature versus laser intensity times wavelength squared: a comparison of theory and experiments

Ramis Abril, Rafael and Sanmartín Losada, Juan Ramón (1983). Electron temperature versus laser intensity times wavelength squared: a comparison of theory and experiments. "Nuclear Fusion", v. 23 ; pp. 739-749. ISSN 0029-5515.

Description

Title: Electron temperature versus laser intensity times wavelength squared: a comparison of theory and experiments
Author/s:
  • Ramis Abril, Rafael
  • Sanmartín Losada, Juan Ramón
Item Type: Article
Título de Revista/Publicación: Nuclear Fusion
Date: 1983
Volume: 23
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Física Aplicada a la Ingeniería Aeronáutica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The peak temperature in the corona of plasma ejected by a laser-irradiated slab is discussed in terms of a one-electron-temperature model. Both heat-flux saturation and pulse rise-time effects are considered;the intensity in the rising half of the pulse is approximated by a linear function of time, I(t) = Iot/r. The temperature is found to be proportional to (IQX2)273 and a function of I0X4/r. Above a certain value of I0X4/T, the plasma presents two characteristic temperatures (at saturation and at the critical surface) which can be identified with experimentally observed cold- and hot-electron temperatures. The results are compared with extensive experimental data available for both nd and CO2 lasers, I0(W'cnf2) X2 (/um) starting around 1012. The agreement is good if substantial flux inhibition is assumed (flux-limit factor f = 0.03), and fails for I0X2 above 1O1S. Results for both ablation pressure and mass ablation rate are also given.

More information

Item ID: 21475
DC Identifier: http://oa.upm.es/21475/
OAI Identifier: oai:oa.upm.es:21475
Official URL: http://iopscience.iop.org/article/10.1088/0029-5515/23/6/002
Deposited by: Biblioteca ETSI Aeronauticos
Deposited on: 30 Oct 2013 07:27
Last Modified: 24 Oct 2016 11:00
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