The quantum-classical crossover in the tunneling effect of molecule-magnets is studied by means of numerical method.

By means of ingenious measurement of correlative signals upstream and downstream,passing time of corresponding peaks of correlative signals is computed and the motion velocity of rolled objects is indirectly meansured.

A Physical Model of Short Channel MOSFET s Transit Time;

Design facts in side appending radial three-cavity transit time oscillator

A new ultrasonic transit time measure method is realized based on small tube flow-measurement,with the CPLD.

Digital correlation approach is used to find the time of flight(tof) in ultrasonic distance measurement.

For studying transport of hot electrons in solid targets by transition radiation(TR),the image pattern of spatial distribution and spectrum of optical emission were measured at the normal direction from the rear side of targets employing optical charge coupled device(CCD) camera and optical multi-channel spectrometer apparatus(OMA) on the 100 TW femtosecond laser facility.

In order to im-prove its beam diagnostic system transition radiation has been used instead of the original phosphor target.

The spatial pattern and spectrum of transition radiation have been measured at the normal direction from the rear surfaces of targets,employing an optical CCD camera and an OMA optical multi-channel spectrometer on the 100 TW femtosecond laser facility.