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Laboratory of alpha-Ray Emitters Beneficial and safety uses of radioisotopes and nuclear fuels

Our laboratory facilitates the use of more than 170 different radioisotopes and nuclear materials. This facility accommodates physical, chemical, and radiochemical researches on actinides compounds, and material scientific researches on the irradiation effect by using measurements system of positron lifetime and electron microscopes. Especially under the Grantin- Aid for Scientific Research (S) started from 2008, successive introductions of several advanced systems, such as a physical properties measurement system (PPMS; the lowest limit for measurements is 100 mK) and a tetra-arc-furnace for single crystal growth, integrated the leading-hub laboratory in actinide physics and chemistry, under a close cooperation with International Research Center for Nuclear Materials Science.

Prof. Hiroaki ABE

Head:

Assoc. Prof.
Tomoo YAMAMURA

Assoc. Prof.
Yuhki SATOH

Technical Staff.
Kenji SHIRASAKI

Tetra-arc furnance (Top) and

Tetra-arc furnance (Top) and PPMS with handmaid probe enabling lowest temperature of 100 mK (Bottom).

Schematic illustration of a superconducting phase diagram where

Schematic illustration of a superconducting phase diagram where a spontaneous vortex state emerges as a result of the compromise of the two competitive orders; a vortex state induced by spontaneous magnetization can exist even at zero external magnetic field in UCoGe (right panel), in contrast to a regular type-II superconductor (left panel).

Molecular structure of Er (III) Zn (II) 3 wheel-shaped tetranuclear complex where Er (III) ion (shown in green) is located in the center of six equatorial oxygen donor atoms. This type of anisotropic coordination geometry is essential for Ising type magnetic anisotropy for Er (III) ion.

Molecular structure of Er (III) Zn (II) 3 wheel-shaped tetranuclear complex where Er (III) ion (shown in green) is located in the center of six equatorial oxygen donor atoms. This type of anisotropic coordination geometry is essential for Ising type magnetic anisotropy for Er (III) ion.