Published August 28, 2004
| Version v1
Journal article
High abundance of metastable helium atoms for diagnostic application
Creators
- 1. Physics Department, University of Puerto Rico, San Juan 00931-3343 (Puerto Rico)
Description
A new Penning type of discharge has been used to generate high-density metastables. The highest metastable density of 3.5 x 1016 m-3 is obtained at a static gas pressure of 500 mTorr. At 0.5 mTorr gas pressure discharge, we achieve a very high abundance of metastables N(21S)/N(He) up to 10-3. These metastable densities obtained are high enough to be used in diagnosing the internal electric field inside the plasma source based on laser-induced fluorescence techniques
Availability note (English)
Available online at http://stacks.iop.org/0953-4075/37/3265/b4_16_004.pdf or at the Web site for the Journal of Physics. B, Atomic, Molecular and Optical Physics (ISSN 1361-6455) http://www.iop.org/Additional details
Identifiers
- URL
- http://stacks.iop.org/0953-4075/37/3265/b4_16_004.pdf; http://www.iop.org/;
- DOI
- 10.1088/0953-4075/37/16/004;
- PII
- S0953-4075(04)78686-1;
Publishing Information
- Journal Title
- Journal of Physics. B, Atomic, Molecular and Optical Physics
- Journal Volume
- 37
- Journal Issue
- 16
- Journal Page Range
- p. 3265-3269
- ISSN
- 0953-4075
- CODEN
- JPAPEH
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 36029710
- Subject category
- S74: ATOMIC AND MOLECULAR PHYSICS; S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Descriptors DEI
- ABUNDANCE; ATOMS; DENSITY; ELECTRIC FIELDS; FLUORESCENCE; HELIUM; LASER RADIATION; METASTABLE STATES; PENNING DISCHARGES; PLASMA
- Descriptors DEC
- ELECTRIC DISCHARGES; ELECTROMAGNETIC RADIATION; ELEMENTS; EMISSION; ENERGY LEVELS; EXCITED STATES; FLUIDS; GASES; LUMINESCENCE; NONMETALS; PHOTON EMISSION; PHYSICAL PROPERTIES; RADIATIONS; RARE GASES