English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Calculation and interpretation of the continuum radiation of hydrogen molecules

Fantz, U., Schalk, B., & Behringer, K. (2000). Calculation and interpretation of the continuum radiation of hydrogen molecules. New Journal of Physics, 2: 7. Retrieved from http://www.iop.org/EJ/abstract/1367-2630/2/1/007.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-5C90-7 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-5C91-5
Genre: Journal Article

Files

show Files
hide Files
:
NJP-Fantz.pdf (Any fulltext), 362KB
Name:
NJP-Fantz.pdf
Description:
-
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
-
Copyright Info:
eDoc_access: PUBLIC
License:
-

Locators

show

Creators

show
hide
 Creators:
Fantz, U.1, Author              
Schalk, B.2, Author              
Behringer, K.1, Author              
Affiliations:
1Experimental Plasma Physics 4 (E4), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856293              
2External Organizations, ou_persistent22              

Content

show
hide
Free keywords: -
 Abstract: Calculations of the hydrogen molecular continuum (a3Σ+g → b3Σ+u, where the latter is repulsive) have been carried out in the wavelength range 120–600 nm, based on potential curves and reduced masses. They give transition probabilities, lifetimes and spectral intensities as a function of vibrational level population in the upper state a3Σ+g. Absolute radiation measurements in H2/He and D2/He low-pressure ECR plasmas in the wavelength range 170–300 nm are compared with results from these calculations. Using the Franck–Condon principle and the corona model for excitation, the relative vibrational population in the upper state is correlated with the population in the ground state, characterized by the vibrational temperature Tvib. The absolute intensities depend on the electron temperature Te via the electron excitation rate coefficients. Therefore, the shape of the continuum radiation reflects Tvib, and the absolute value is a function of Te. The results are in good agreement with those from other spectroscopic techniques (Te from He line intensities, Tvib from Fulcher band radiation) in the visible spectral range. This demonstrates that emission spectroscopy of the continuum radiation of H2 and D2 is a good tool for diagnostics of low-pressure plasmas. The calculations have also been carried out for other hydrogen isotopes (T2, HD, DT).

Details

show
hide
Language(s): eng - English
 Dates: 2000
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 278086
URI: http://www.iop.org/EJ/abstract/1367-2630/2/1/007
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: New Journal of Physics
  Alternative Title : NJP
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: IOP Publ. Ltd. and Deutsche Physikalische Gesellschaft
Pages: - Volume / Issue: 2 Sequence Number: 7 Start / End Page: - Identifier: ISSN: 1367-2630