Browsing by Author "Wu, M"

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Imaging the pair-correlated excitation function: The F+CH4 -> HF(v ')+CH3 (nu=0) reaction
(2004-01-01)
Shiu, W
;
Lin, JJ
;
Liu, KP
;
Wu, M
;
Parker, DH
The velocity map ion imaging technique was applied to measure the reaction excitation function for the first time. It was found that the "raw" excitation function was significantly distorted by the density-to-flux transformation of the title reaction. Through a systematic investigation, possible reasons for such a dramatic effect are outlined. In addition, the state-resolved, pair-correlated excitation functions and branching ratios are presented. Effects of imperfect time slicing in the time-sliced velocity imaging technique in general are also discussed. (C) 2004 American Institute of Physics.
Integrated near-field optical head for hybrid recording
(2003)
Chiu, Y
;
Wu, M
;
Shieh, HPD
;
Sun, YT
;
Chou, HL
As the recording density of longitudinal magnetic storage increases at a 100% annual growth rate, it will soon approach the superparamagnetic limit where the thermal energy at room temperature starts to induce thermal instability to the grains in the small recorded marks. Thermal magnetic recording schemes, such as those used in magneto-optical recording, help alleviate the problems with the superparamagnetic limit. Recently, a hybrid recording system was proposed where data were recorded thermal magnetically on a magneto-optical disk and read back with a GMR head. In this paper, we propose an integrated planar head that combines an optical fiber lens, a solid immersion lens, a sub wavelength aperture, a micro coil, an air bearing surface, and a GMR head for such a hybrid recording system. Preliminary fabrication and calculation are discussed.