Adsorption of cesium onto polycrystalline tantalum surfaces
Technical Report
·
OSTI ID:7343640
The amount of cesium which adsorbs onto polycrystalline tantalum is determined by a technique which utilizes radioactively tagged cesium in conjunction with a specially designed test vehicle. Tantalum surface temperatures of 500 to 1700/sup 0/K and cesium arrival rates of 10/sup 15/ to 10/sup 21/ atoms/cm/sup 2/-s were investigated. Cesium metal which has been tagged with radioactive cesium-134 is introduced to a disk shaped control volume. The amount of cesium which adsorbs onto the two disk faces are monitored with a sodium iodide crystal gamma detector. The surface temperatures were controlled by an external furnace and the cesium pressure was controlled by varying the temperature of a connecting reservoir. Results were plotted as atom concentration versus reciprocal absolute temperature for various constant cesium arrival rates. The curves show similar behavior to the common theoretical predictions until 0.5 to 0.75 of a monolayer. At this point, the cesium adsorption increases rapidly to well over one monolayer. The cause of this rapid increase is hypothesized to be the formation of cesium oxide on the surfaces. 35 figures, 68 references (auth)
- Research Organization:
- Arizona State Univ., Tempe (USA)
- OSTI ID:
- 7343640
- Report Number(s):
- TID-27053
- Country of Publication:
- United States
- Language:
- English
Similar Records
Direct measurement of cesium absorption isobars on polycrystalline tantalum
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BASIC RESEARCH IN THERMIONICS. PART I. CESIUM PERMEATION THROUGH TANTALUM. Summary Report No. 1, November 1, 1961 to October 31, 1962
Journal Article
·
Sat Dec 31 23:00:00 EST 1977
· J. Appl. Phys.; (United States)
·
OSTI ID:5348090
Direct measurement of cesium adsorption on high-temperature surfaces using radioactive tracers
Journal Article
·
Sun Oct 31 23:00:00 EST 1976
· Nucl. Technol.; (United States)
·
OSTI ID:7317914
BASIC RESEARCH IN THERMIONICS. PART I. CESIUM PERMEATION THROUGH TANTALUM. Summary Report No. 1, November 1, 1961 to October 31, 1962
Technical Report
·
Mon Dec 31 23:00:00 EST 1962
·
OSTI ID:4640491
Related Subjects
36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ADSORPTION
ALKALI METAL ISOTOPES
ALKALI METALS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CESIUM
CESIUM 134
CESIUM ISOTOPES
CRYSTALS
ELEMENTS
HIGH TEMPERATURE
HOURS LIVING RADIOISOTOPES
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPE APPLICATIONS
ISOTOPES
METALS
NUCLEI
ODD-ODD NUCLEI
POLYCRYSTALS
RADIOISOTOPES
REFRACTORY METALS
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
TANTALUM
TEMPERATURE DEPENDENCE
TRACER TECHNIQUES
TRANSITION ELEMENTS
VERY HIGH TEMPERATURE
YEARS LIVING RADIOISOTOPES
360104* -- Metals & Alloys-- Physical Properties
ADSORPTION
ALKALI METAL ISOTOPES
ALKALI METALS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CESIUM
CESIUM 134
CESIUM ISOTOPES
CRYSTALS
ELEMENTS
HIGH TEMPERATURE
HOURS LIVING RADIOISOTOPES
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPE APPLICATIONS
ISOTOPES
METALS
NUCLEI
ODD-ODD NUCLEI
POLYCRYSTALS
RADIOISOTOPES
REFRACTORY METALS
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
TANTALUM
TEMPERATURE DEPENDENCE
TRACER TECHNIQUES
TRANSITION ELEMENTS
VERY HIGH TEMPERATURE
YEARS LIVING RADIOISOTOPES