1:45 PM - 3:15 PM
[SCG49-P01] Annealing experiments for removal of crystal defects and observation of track disappearance conditions
Keywords:anneal, Muscovite(MICA)
In this study, an annealing experiment of muscovite with two parameters was conducted.
In recent years, the method of using muscovite as a detector has been attracting attention as one of the new detectors in dark matter exploration. This method is expected to facilitate more extensive and easier exploration experiments that have been conducted locally and on a large scale by extending the photographic plate technique that has been used in dark matter exploration to the muscovite, phyllosilicates. In fact, a dark matter search using muscovite as a detector was tested for practical use by Snowden-ift et al. in 1995.
However, a dark matter search using muscovite has not yet been established. This is because it has not been clarified how heat affects the residual of tracks in muscovite, and because it is difficult to quantify the energy loss from recoil nuclei caused by alpha decay when particles are dropped into muscovite. The latter is especially important for dark matter exploration because it is a reference for the energy loss of particles. On the other hand, if particles are injected without processing, it is difficult to accurately quantify the energy loss due to crystal defects in the mineral.
Therefore, annealing was performed in a muffle furnace with two parameters, temperature and time, to quantify the energy loss. This experiment was performed with the main goal of removing crystal defects caused by α-particle recoil, while allowing for easy prediction of the remaining tracks of the observation target.
In recent years, the method of using muscovite as a detector has been attracting attention as one of the new detectors in dark matter exploration. This method is expected to facilitate more extensive and easier exploration experiments that have been conducted locally and on a large scale by extending the photographic plate technique that has been used in dark matter exploration to the muscovite, phyllosilicates. In fact, a dark matter search using muscovite as a detector was tested for practical use by Snowden-ift et al. in 1995.
However, a dark matter search using muscovite has not yet been established. This is because it has not been clarified how heat affects the residual of tracks in muscovite, and because it is difficult to quantify the energy loss from recoil nuclei caused by alpha decay when particles are dropped into muscovite. The latter is especially important for dark matter exploration because it is a reference for the energy loss of particles. On the other hand, if particles are injected without processing, it is difficult to accurately quantify the energy loss due to crystal defects in the mineral.
Therefore, annealing was performed in a muffle furnace with two parameters, temperature and time, to quantify the energy loss. This experiment was performed with the main goal of removing crystal defects caused by α-particle recoil, while allowing for easy prediction of the remaining tracks of the observation target.