Synthesis of isotopes of fermium with mass numbers 247 and 246
Flerov, G. N. ; Polikanov, S. M. ; Mikheev, V. L. ; Ilyushchenko, V. I. ; Miller, M. B. ; Shchegolev, V. A.
Springer
Published 1967
Springer
Published 1967
| ISSN: |
1573-8205
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| Source: |
Springer Online Journal Archives 1860-2000
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| Topics: |
Energy, Environment Protection, Nuclear Power Engineering
Physics
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| Notes: |
Abstract The isotopes Fm247, Fm247m and Fm246 were synthesized in the extracted beam of the 310-cm heavy-ion cyclotron in the Joint Institute for Nuclear Research by irradiating Pu239 with C12 ions. ]he procedure of collecting the recoil atoms by means of gas jets is used, with subsequent recording of their ~- decay with Si(Au) detectors. For the isotope Fm247, α-activities are obtained with two different half-lives - one with two obviously complex groups of α-particles Eα=7.87±0.05MeV (∼70%) and EEα=7.93±0.05 MeV (∼30%), whose half- life is T1/2=35±4 sec; the other, with Eα=8.18±0.03 MeV has T1/2=9.2±2.3 sec. Data are confirmed concerning the properties of the isotope Fm246(Eα=8.25±0.03MeV and T1/2=1.6±0.4 sec), synthesized in 1966 at The Joint Institute for Nuclear Research.
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| Type of Medium: |
Electronic Resource
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| URL: |