Blast Measurements
Abstract
The principal problem of the beta densitometer is to develop a detector-recording combination capable of discriminating between the flux from the beta source and the radiation from the nuclear bomb. Modifications to the Operation Greenhouse model of the densitometer weretested during Operation Buster. One modification was the combination of a mechanical modulator of the beta signal and a tuned amplifier designed to discriminate between the beta flux and the bomb radiation. Another modification consisted in raising the phototube (radiationdetector) from below ground level into the air to test the feasibility of measurement away from ground surface. The field tests at Operation Buster showed that these modifications were extremely difficult owing to effect of a strong electromagnetic disturbance from the nuclear explosion, which is not yet well understood, on the amplifier and on the phototube and wiring used in air mounting. The recording system, mechanical parts, and a new system of source mounting and loading were all satisfactory. Electronic components of the system of a-c modulation require redesign. If the beta densitometer as an air-density-measuring instrument is desired for use in nuclear weapons tests, the main research effort must be directed to the improvement of the electronic components.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1952
- Accession Number
- AD0341046
Entities
People
- E. J. Zadina
- F. B. Porzel
Organizations
- Los Alamos National Laboratory