. Biophysical research methods. Biophysics -- Research. 602 ADOLF F. VOIGT isotopes are confined to the elements with atomic numbers of 83 and greater, they are not of wide interest as biological tracers. Negative 13 rays are electrons ejected from the nucleus. A nuclide with a greater number of neutrons than its stable isotopes tends to transform itself, by emitting negative /3 rays, into its isobar of the ele- ment of next higher atomic number, corresponding to the hypotheti- cal process: • » iHi + on"- i^» or conversion of a neutron into a proton. In general the energy of j8 rays is co
. Biophysical research methods. Biophysics -- Research. 602 ADOLF F. VOIGT isotopes are confined to the elements with atomic numbers of 83 and greater, they are not of wide interest as biological tracers. Negative 13 rays are electrons ejected from the nucleus. A nuclide with a greater number of neutrons than its stable isotopes tends to transform itself, by emitting negative /3 rays, into its isobar of the ele- ment of next higher atomic number, corresponding to the hypotheti- cal process: • » iHi + on"- i^» or conversion of a neutron into a proton. In general the energy of j8 rays is considerably less than that of the a particles, those from the useful tracers ranging from to 2 The /3 rays from a given substance do not all have the same energy but have an energy distri- bution, whose maximum value is usually listed in tables, the average energy being to of this maximum. A discussion of this, of the loss of energy by electrons in traversing matter, and of the distribu- tion of ions along the tracks of /S particles is given in the chapter by en CO UJ X < < -. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Uber, Fred Murray, 1905-. New York : Interscience Publishers
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