Accession Number : ADA321450

Title :   A New Measurement of the Packing Fractions of the Nickel Isotopes,

Corporate Author : TECHNICAL INFORMATION SERVICE (AEC) OAK RIDGE TN

Personal Author(s) : Shaw, A. E.

PDF Url : ADA321450

Report Date : 20 SEP 1948

Pagination or Media Count : 5

Abstract : The most recent determination of the packing fractions of the nickel isotopes was reported in 1941. The source of positive ions for this measurement was a high voltage discharge through a vapor mixture of Ni(CO)4 and n-C7H16. No further details were given on the source but in a previous paper, it was suggested that the cylindrical discharge tube was provided with an aluminum bar anode and a concave iron cathode. In the absence of more details it is difficult to judge the constancy or reproducibility of this source of positive ions. Generally speaking, a high voltage gaseous discharge tends to produce an intermittent and fluctuating beam of ions. In view of the uncertainties of this type of source and the rather surprisingly rapid and irregular variation in the binding energy of the nickel isotopes, as inferred from the packing fraction measurements of the authors, it was deemed desirable to make new measurements under completely different conditions.

Descriptors :   *ISOTOPES, *NICKEL, IONS, SOURCES, CATIONS, MEASUREMENT, IRON, CATHODES, NUCLEAR BINDING ENERGY, CYLINDRICAL BODIES, ALUMINUM, GAS DISCHARGES, REPRODUCIBILITY, HIGH VOLTAGE, CARBONYL COMPOUNDS, ANODES, CONCAVE BODIES, DISCHARGE TUBES.

Subject Categories : Radiation and Nuclear Chemistry
      Isotopes
      Inorganic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE