Microanalysis by nuclear reactions and by atomic excitation with low energy charged particles. Application to plants analysis (in French)
Technical Report
·
OSTI ID:4937353
Thesis. Submitted to Universite Scientifique et Medicale de Grenoble (France). Microanalysis by nuclear reaction and detection of characteristic x- rays was used to measure the distribution of fluorine, calcium, and potassium along fir needles. Fluorine (destroying element) was analyzed by the /sup 19/ F(p, alpha )/sup 16/O reaction (1350-keV resonance). Simultaneously concentrations of calcium and potassium were measured by means of their characteristic K alpha and K BETA x-rays excited by the proton beam. The experimental set up involved a 2-MeV Van de Graaff accelerator, and chargedparticle and x-ray detectors STAthe last is a detector Si(Li), FWHM 200 eV when used with the accelerator!. Distribution of fluorine, calcium, and potassium in the fir needles is shown and some evidence of a relation between the destroying element (fluorine) and the major components of the plant (calcium and potassium) is given. (auth)
- Research Organization:
- CEA Centre d'Etudes Nucleaires de Grenoble, 38 (France)
- Sponsoring Organization:
- Sponsor not identified
- NSA Number:
- NSA-29-018032
- OSTI ID:
- 4937353
- Report Number(s):
- CEA-R--4544
- Country of Publication:
- France
- Language:
- French
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