Novel Faraday cup for the simultaneous observation and measurement of ion-beam currents
Description
The Faraday cup is constructed around a Galileo channel electron multiplier array (CEMA) which serves as the basis of an internal image intensification system (a gain of greater than 104) for the observation of the ion beam; the CEMA also acts as a collector for the ion cured by a Keithley 602 electrometer. The ion current is integrated by a simple and inexpensive dosimeter; the electronic circuit for the dosimeter is described. The application of the Faraday cup to the observation and measurement of a 30 keV Ar+ ion beam is presented as an illustrative example. This Faraday cup was also employed to observe and measure 30 keV Cr+, Mo+ or W+ and 18 keV Au+ ion beams employed for the in-situ irradiation of field-ion microscope specimens
Availability note (English)
MF available from INIS under the Report Number; Available from NTIS., PC A02/MF A01.
Files
Restricted
The record is publicly accessible, but files are restricted to users with access.
Additional details
Publishing Information
- Imprint Pagination
- 15 p.
- Report number
- COO--3158-55
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 9377144
- Subject category
- S74: ATOMIC AND MOLECULAR PHYSICS; S43: PARTICLE ACCELERATORS;
- Descriptors DEI
- ARGON IONS; BEAM CURRENTS; CHROMIUM IONS; ELECTROMETERS; ELECTRON MULTIPLIERS; FARADAY CUPS; GOLD IONS; IMAGE INTENSIFIERS; ION MICROSCOPY; MOLYBDENUM IONS; PERFORMANCE; SPECIFICATIONS; TUNGSTEN IONS
- Descriptors DEC
- ATOMIC IONS; BEAM MONITORS; CHARGED PARTICLES; CURRENTS; ELECTRIC MEASURING INSTRUMENTS; ELECTRICAL EQUIPMENT; ELECTRON TUBES; IONS; MEASURING INSTRUMENTS; MICROSCOPY