Search for De-excitation of the Re-186m and Ag-110m Nuclear Isomers in Plasma of High-Power Picosecond Laser Pulse

摘要

The possibility of observing the stimulated de-excitation of nuclear isomers (SDENI) in plasma (plasma lifetime similar to 1.5 ps, temperature of electrons similar to 10 keV) formed by the impact of a high-power laser pulse (similar to 10(18) W cm(-2)) on a target is studied experimentally. Preliminary experiments are carried out with the Ag-110m (T-1/2 = 250 days) and Re-186m (T-1/2 = 2 x 10(5) years) isomers. A weak SDENI effect is observed only for the Ag-110m isomer on a platinum backing.