Published 1970
| Version v1
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Bi209 alpha activity
Description
The study for measuring Bi209 alpha activity is presented. Ilford L4 nuclear emulsion pellicles loaded with bismuth citrate to obtain a load of 100 mg/cm3 of dry emulsion, were prepared. Other pellicles were prepared with the same. Ilford L4 gel to estimate the background radiation. To observe 'fading' effect, pellicles loaded with bismuth were submitted to neutrons of high energy, aiming to record recoil proton tracks. The pellicles were confined in nitrogen atmosphere at temperature lower than -100C. The Bi209 experimental half-life was obtained and compared with the estimated theoretical data. (M.C.K.)
Availability note (English)
MF available from INIS under the Report Number.Abstract (Portuguese)
Apresenta-se o estudo para medida de atividade alfa do Bi209. Foram preparadas peliculas de emulsao nuclear Ilford L4 carregadas com citrato de bismuto para obter uma carga de 100 mg/cm3 de emulsao seca. Outras peliculas foram preparadas com o mesmo gel Ilford L4 para estimar a radiacao de fundo. Para observar o desaparecimento da imagem latente, peliculas carregadas com bismuto foram submetidas a neutron de alta energia, a fim de registrar tracos de protons de recuo. As peliculas foram confinadas numa atmosfera de nitrogenio e em temperatura abaixo de -100C. Obteve-se a meia vida do Bi209 experimentalmente e comparou-se com o valor estimado teoricamente. (Autor)Files
18075647.pdf
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Additional details
Additional titles
- Original title (Portuguese)
- Atividade alfa do Bi
Publishing Information
- Imprint Pagination
- 89 p.
- Report number
- INIS-BR--791
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 18075647
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Resource subtype / Literary indicator
- Numerical Data, Thesis
- Descriptors DEI
- ALPHA DECAY; BACKGROUND RADIATION; BISMUTH 209; COMPARATIVE EVALUATIONS; EXPERIMENTAL DATA; HALF-LIFE; LOW TEMPERATURE; NEUTRON BEAMS; NUCLEAR EMULSIONS; PROTON RECOIL DETECTORS
- Descriptors DEC
- BEAMS; BISMUTH ISOTOPES; DATA; DECAY; EVALUATION; HEAVY NUCLEI; INFORMATION; ISOTOPES; MEASURING INSTRUMENTS; NEUTRON DETECTORS; NUCLEAR DECAY; NUCLEI; NUCLEON BEAMS; NUMERICAL DATA; ODD-EVEN NUCLEI; PARTICLE BEAMS; RADIATION DETECTORS; RADIATIONS; STABLE ISOTOPES