Isotope-selective ionization utilizing control of molecular rotation with femtosecond laser pulses; High selectivity with multiple pulse irradiation

Akagi, Hiroshi; Kasajima, Tatsuya*; Kumada, Takayuki ; Itakura, Ryuji; Yokoyama, Atsushi; Hasegawa, Hirokazu*; Oshima, Yasuhiro*

We are demostrating isotope-selective ionization of $^{14}$ N $_{2}$ and $^{15}$ N $_{2}$ isotopologues, utilizing molecular alignment and angular dependent ionization. In the present work, we used a train of four identical pulses with 125.7-ps interval to creating rotational wave packets in these isotopologues. The ion yield ratio $^{15}$ N $_{2}$ / $^{14}$ N $_{2}$ changed in the range from 0.49 to 2.00, which was two-times wider than that obtained with the single pulse.

Language	:	Japanese
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Meeting title	:	第13回同位体科学研究会
Held date	:	2015/03
Location (city)	:	東京
Location (country)	:	日本
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Registration No. : BB20142923
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