### Abstract

We have examined, by a computer simulation, an on-line measurement of diffusion coefficients by using a short-lived alpha particle emitter, ^{8}Li (half life of 0.84s), as a radiotracer. The energy spectra of alpha particles emitted from diffusing ^{8}Li primarily implanted in the sample of LiAl are simulated as a measure of the diffusion of ^{8}Li in the sample. As a possible time sequence for the measurement, a time cycle of 6 s, i.e. the implantation of ^{8}Li for 1.5 s and subsequent diffusion for 4.5 s, is supposed. The sample is primarily set on a given temperature for the measurement. The time-dependent yields of alpha particles during the time cycle reveal the possibility to measure the diffusion coefficient with an accuracy of 10% if larger than 1 × 10^{-9} cm^{2}/s, by the comparison with the experimental spectra measured at the temperature, i.e. at a certain diffusion coefficient.

Original language | English |
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Pages (from-to) | 4576-4583 |

Number of pages | 8 |

Journal | Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers |

Volume | 42 |

Issue number | 7 A |

DOIs | |

Publication status | Published - 2003 Jul |

### Keywords

- Concentration-depth profile
- Diffusion coefficient
- Implantation in LiAl
- Li
- On-line measurement
- Short-lived radiotracer beams
- Time-dependent yield spectra

### ASJC Scopus subject areas

- Engineering(all)
- Physics and Astronomy(all)

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## Cite this

*Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers*,

*42*(7 A), 4576-4583. https://doi.org/10.1143/jjap.42.4576