A Collision Cascade Enhancement Model to Postulate Recoil Implantation Reaction Yields in Metal β-Diketonates

Atsushi Miyakawa, Tsutomu Sekine, Kenji Yoshihara

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

A collision cascade enhancement model is proposed to explain specific features of recoil implantation reactions. The large substitution yield in the reaction M + M(β-dik)3 [Formula Omitted] M(β-dik)3 + M increases with energy and saturates at about 100 keV, with the energy value very high compared to the ordinary hot atom reaction. The yield-energy curve showed an inflexion point for M = 105Rh and M = Rh. The observed yield (Yobs) is expressed by the following equation : where Y0 is initial yield, Sn is a nuclear stopping power, Ej(r) is an efficiency term and F{r) is an attenuation term at distance r. Assuming [Formula Omitted] and [Formula Omitted], integration gives a curve which fits the experimental one when n = 4. The agreement is more satisfactory if S., is taken into consideration in integration. In the collision cascade enhancement model proposed in this study, enhancement mechanisms are supposed to involve such forms of indirect interaction as attack of high-pressure and high-temperature pulses.

Original languageEnglish
Pages (from-to)87-92
Number of pages6
JournalRadiochimica Acta
Volume60
Issue number2-3
DOIs
Publication statusPublished - 1992

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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