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High-resolution jet spectroscopy and...

Harper, Warren William.

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High-resolution jet spectroscopy and dynamics of semiconductor growth intermediates.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	High-resolution jet spectroscopy and dynamics of semiconductor growth intermediates./
作者:	Harper, Warren William.
面頁冊數:	339 p.
附註:	Director: Dennis J. Clouthier.
Contained By:	Dissertation Abstracts International59-04B.
標題:	Chemistry, Physical. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9831364
ISBN:	059184429X

High-resolution jet spectroscopy and dynamics of semiconductor growth intermediates.
Harper, Warren William.

High-resolution jet spectroscopy and dynamics of semiconductor growth intermediates. - 339 p.

Director: Dennis J. Clouthier.

Thesis (Ph.D.)--University of Kentucky, 1998.

Laser induced fluorescence (LIF) spectra of the $\rm\tilde A\sp1\ A\sp{\prime\prime}$-$\rm\tilde X\sp1\ A\sp\prime$ band systems of HSiF, HSiCl, HGeCl, HGeBr, and their deuterated isotopomers have been observed under supersonic jet conditions using the pulsed discharge technique. High-resolution spectra with resolved rotational structure were used to determine rotational constants, which were in turn used to determine the molecular structures in the ground and excited states. Low-resolution spectra provided vibrational structure which allowed the determination of the vibrational frequencies. In favorable cases the vibrational frequencies were used, in combination with the structure, in a normal coordinate analysis to determine the force constants for the internal coordinates of each molecule. Time resolved fluorescence studies were used to determine the excited state lifetime of each molecule.

ISBN: 059184429XSubjects--Topical Terms:

560527
Chemistry, Physical.

High-resolution jet spectroscopy and dynamics of semiconductor growth intermediates.
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035 $a (UnM)AAI9831364
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040 $a UnM $c UnM
100 1 $a Harper, Warren William. $3 1258185
245 1 0 $a High-resolution jet spectroscopy and dynamics of semiconductor growth intermediates.
300 $a 339 p.
500 $a Director: Dennis J. Clouthier.
500 $a Source: Dissertation Abstracts International, Volume: 59-04, Section: B, page: 1668.
502 $a Thesis (Ph.D.)--University of Kentucky, 1998.
520 $a Laser induced fluorescence (LIF) spectra of the $\rm\tilde A\sp1\ A\sp{\prime\prime}$-$\rm\tilde X\sp1\ A\sp\prime$ band systems of HSiF, HSiCl, HGeCl, HGeBr, and their deuterated isotopomers have been observed under supersonic jet conditions using the pulsed discharge technique. High-resolution spectra with resolved rotational structure were used to determine rotational constants, which were in turn used to determine the molecular structures in the ground and excited states. Low-resolution spectra provided vibrational structure which allowed the determination of the vibrational frequencies. In favorable cases the vibrational frequencies were used, in combination with the structure, in a normal coordinate analysis to determine the force constants for the internal coordinates of each molecule. Time resolved fluorescence studies were used to determine the excited state lifetime of each molecule.
520 $a Using the pulsed discharge technique, LIF of the $\rm \tilde A\ \sp1 B\sb1$-$\rm\tilde X\ \sp1A\sb1$ band system of jet-cooled GeH$\sb2$ was observed. Vibronic transitions involving $\nu\sb1$ and $\nu\sb2$ in the excited state were identified and found to consist of only a single rotational transition terminating in the 0$\sb{0.0}$ level. Fortunately, the 0$\sbsp{0}{0}$ band was more extensive, containing just enough transitions to determine the rotational constants in the ground and excited states and calculate the structure. Time resolved fluorescence studies revealed that the lifetime decreases dramatically as the rotational angular momentum increases, confirming the existence of an excited state predissociation process.
520 $a Silylidene (H$\sb2 $c =Si) was studied using the pulsed discharge technique, and was found to exhibit a number of unusual phenomena. Fluorescence was observed from the S$\sb2$ state, in violation of Kasha's rule, due to the anomalously large S$\sb2$-S$\sb1$ separation. A number of vibronically induced transitions were also observed, allowing the determination of $\nu\sb6$, an antisymmetric vibrational frequency. Using the rotational constants from H$\sb2 $c =Si and D$\sb2 $c =Si, the molecular structure was determined, and found to be in excellent agreement with ab initio calculations. Field-free quantum beats were observed in the collisionless single rotational level fluorescence decays of almost every accessible level of H$\sb2 $c =Si and D$\sb2 $c =Si. In analogous experiments, H$\sb2 $c =Ge and D$\sb2 $c =Ge were observed for the first time. The spectroscopy is analogous to that of silylidene, and germylidene exhibits fluorescence from the S$\sb2$ state with extensive field-free molecular quantum beats.
590 $a School code: 0102.
650 4 $a Chemistry, Physical. $3 560527
650 4 $a Physics, Molecular. $3 1018648
690 $a 0494
690 $a 0609
710 2 0 $a University of Kentucky. $3 1017485
773 0 $t Dissertation Abstracts International $g 59-04B.
790 $a 0102
790 1 0 $a Clouthier, Dennis J., $e advisor
791 $a Ph.D.
792 $a 1998
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9831364