• K P Gopinathan

      Articles written in Proceedings – Section A

    • (n, p) Reactions in molybdenum by fission neutrons

      K P Gopinathan

      More Details Abstract Fulltext PDF

      Cross-sections for the reactions Mo92 (n, p) Nb92, Mo95 (n, p) Nb95 and Mo96 (n, p) Nb96 in natural molybdenum irradiated in the reactor “Apsara”, are calculated from thick target yield measurements. The reaction Ni58 (n, p) Co58 was used as the standard for the measurement. The activities of the niobium isotopes, chemically separated from the target, are measured by taking the photopeak of the characteristicγ-ray of each isotope using a scintillation spectrometer. These activities are then compared with the standard. Possible sources of error in the measurement are discussed.

    • On the preparation of the neutron-deficient Nb92 in high specific activity

      K P Gopinathan

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      The extraction of niobium by di-isobutyl ketone from hydrochloric acid solutions is investigated. This method is made use of in the preparation of the neutron-deficient Nb92 in high specific activity. Nb92 is produced by (n, p) reaction in Mo92 using natural molybdenum irradiated in the reactor. The effect of (n, p) reactions in other naturally present isotopes of molybdenum, on the radiochemical purity of the sample, is discussed.

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