Zobrazeno 1 - 10
of 61
pro vyhledávání: '"Tamio Nishimura"'
Autor:
Franco A. Gianturco, Tamio Nishimura
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 221:24-29
We report a theoretical study and the computational results on vibrational excitations by positron impact of the polyatomic molecules CH 4 and C 2 H 2 as examples. The study has been carried out using the body-fixed vibrational close-coupling (BF-VCC
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec3c189a093877c7a56c165984ac62aa
https://doi.org/10.1016/j.nimb.2004.03.026
https://doi.org/10.1016/j.nimb.2004.03.026
Autor:
Tamio Nishimura, Franco A. Gianturco
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 37:215-223
We present a quantum dynamical treatment of the vibrationally elastic scattering off tetrafluorocarbon (CF4) molecules by very low energy positrons. The present calculation is based on the fixed-nuclei approximation and the interaction potential betw
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bec99f3810bb5453bbc90f1e97711dda
https://doi.org/10.1088/0953-4075/37/1/013
https://doi.org/10.1088/0953-4075/37/1/013
Autor:
Tamio Nishimura, Franco A. Gianturco
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 35:2873-2887
We present a quantum dynamical treatment of the vibrational excitation of gaseous methane molecules from single collisions with low-energy electrons. The exact vibrational coupled equations are solved using the four different normal modes of the mole
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dbf83c3fd3f66471f715da8ae24aaa7e
https://doi.org/10.1088/0953-4075/35/13/303
https://doi.org/10.1088/0953-4075/35/13/303
Autor:
Franco A. Gianturco, Tamio Nishimura
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 192:17-25
We report the quantum close-coupling dynamical equations which are relevant for describing vibrationally inelastic processes in low-energy collisions between a beam of positrons and the CH4 molecule. The interaction potential we employ to model the f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::638714af8acdd25f8d3d9b25ab62dc1e
https://doi.org/10.1016/s0168-583x(02)00701-2
https://doi.org/10.1016/s0168-583x(02)00701-2
Autor:
Tamio Nishimura
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 31:3471-3478
Vibrationally elastic cross sections for electron scattering from difluoromethane are calculated at the collision energies 3-30 eV. No elaborate study for the system has been published to date. Present calculation is based on the fixed-nuclei approxi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5be37c5a2afeb14f7284e8770ecd2b53
https://doi.org/10.1088/0953-4075/31/15/018
https://doi.org/10.1088/0953-4075/31/15/018
Autor:
Tamio Nishimura, Yukikazu Itikawa
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 29:4213-4226
Vibrationally elastic and inelastic cross sections (differential and integral ones) are calculated for electron scattering from hydrogen sulphide at the collision energies 3 - 30 eV. Vibrational excitation of all three fundamental modes is considered
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::790160890cfb4ecd42fe737961e0bd4f
https://doi.org/10.1088/0953-4075/29/18/017
https://doi.org/10.1088/0953-4075/29/18/017
Autor:
Tamio Nishimura, Yukikazu Itikawa
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 27:2309-2316
Vibrationally elastic cross sections for electron collisions with CH4 are calculated with an ab initio electrostatic potential. Effects of electron exchange and target polarization are taken into account approximately. Differential cross sections (DC
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59430f0cd82ed005e6c1578815eb01bc
https://doi.org/10.1088/0953-4075/27/11/024
https://doi.org/10.1088/0953-4075/27/11/024
Autor:
Franco A. Gianturco, Tamio Nishimura
Publikováno v:
Physical Review A. 72
The present results report a computational analysis of the effects of symmetric bond stretching during positron scattering from polyatomic hydrocarbon molecules in the gas phase. The collisions are considered at very low energies where the behavior o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7a2df5ac25f73e34542876a696defb1
https://doi.org/10.1103/physreva.72.022706
https://doi.org/10.1103/physreva.72.022706
Autor:
Tamio Nishimura, Franco A. Gianturco
Publikováno v:
Physical Review Letters. 90
In the present Letter, computational evidence is provided for the first time, choosing the polyatomic ${\mathrm{C}\mathrm{H}}_{4}$ and ${\mathrm{C}}_{2}{\mathrm{H}}_{2}$ molecules as examples, of the existence of virtual states caused by dynamically
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e28be3f2eaee9fa3385edc9e116a266
https://doi.org/10.1103/physrevlett.90.183201
https://doi.org/10.1103/physrevlett.90.183201
Autor:
Tamio Nishimura
Publikováno v:
Organic Syntheses
o- and p-Nitrobenzaldiacetate product: p-nitrobenzaldiacetate. reactant: 50 g. (0.36 mole) of p-nitrotoluene byproduct: p-nitrobenzoic acid product: p-nitrobenzaldehyde product: o-nitrobenzaldiacetate Keywords: acylation; oxidation, CH2 CO; chromium
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a22598fd108daa0c24d39b87754242a
https://doi.org/10.1002/0471264180.os036.23
https://doi.org/10.1002/0471264180.os036.23
