Zobrazeno 1 - 10
of 79
pro vyhledávání: '"N. V. de Castro Faria"'
Autor:
François Impens, A. Medina, Italo Prazeres, C. R. de Carvalho, Jacques Robert, N. V. de Castro Faria, Amanda Alencar, Ginette Jalbert
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics
Journal of Physics B: Atomic, Molecular and Optical Physics, IOP Publishing, 2020
Journal of Physics B: Atomic, Molecular and Optical Physics, IOP Publishing, 2020
We discuss the use of a region of uniform and constant magnetic field in order to implement a two-state atomic polarizer for an H(2S) beam. We have observed that a device with such field configuration is capable of achieving an efficient polarization
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::47450e970146ec076dac1187ba368626
https://hal.science/hal-02929165
https://hal.science/hal-02929165
Autor:
C. R. de Carvalho, Italo Prazeres, François Impens, N. V. de Castro Faria, Amanda Alencar, Jacques Robert, L. O. Santos, Ginette Jalbert
Publikováno v:
Physical Review A. 98
We show that two-particle interferences can be used to probe the nuclear motion in a doubly-excited hydrogen molecule. The dissociation of molecular hydrogen by electron impact involves several decay channels, associated to different molecular rotati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb9ebdeb7c2c0ec97167a8a0be754c62
https://doi.org/10.1103/physreva.98.052136
https://doi.org/10.1103/physreva.98.052136
Autor:
Fabio Zappa, M. M. Sant’Anna, Carlos Renato de Carvalho, N. V. de Castro Faria, Ginette Jalbert, L. F. S. Coelho, B. F. Magnani
Publikováno v:
International Journal of Quantum Chemistry. 111:1836-1842
We present a review of electron detachment cross sections of atomic, molecular, and cluster anionic projectiles colliding with atoms and molecules, the main focus being on reporting systematic experimental studies. These studies use an experimental m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb916637e8b0522c392254803ecde76a
https://doi.org/10.1002/qua.22843
https://doi.org/10.1002/qua.22843
In this paper we report calculations of potential energy curves in the $1.2 a.u.\le R\le100 a.u.$ range at Multireference Configuration Interaction (MRCI) level for doubly excited states of the H$_2$ molecule. We have focused on the $Q_2$ states whic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e77d98fe7710b41a107ede6ec89face
Autor:
A. L. F. de Barros, A. Medina, L. F. S. Coelho, Wania Wolff, M. H. P. Martins, Fabio Zappa, E. Bessa, N. V. de Castro Faria, João Alberto Martins Pereira
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 560:219-223
We measured the vapour pressure of several DNA and RNA bases—uracil, adenine, guanine, thymine and cytosine—in the 300–450 K range. In each case the sample mass loss rate was measured as function of temperature with a simple setup consisting of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e768853e5cf4ad87f4e5323102ba7dc6
https://doi.org/10.1016/j.nima.2006.01.026
https://doi.org/10.1016/j.nima.2006.01.026
Autor:
M. M. Sant’Anna, A. C. F. Santos, N. V. de Castro Faria, A. L. F. de Barros, Fabio Zappa, Wania Wolff, L. F. S. Coelho
Publikováno v:
Plasma Physics and Controlled Fusion. 46:1009-1019
Negative-ion beams have recently been suggested as sources of high-energy heavy atoms to be used as drivers for inertial confinement fusion (ICF). Owing to their electron affinities limited to a few eV, anions can be efficiently photo-detached in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b721d03ae39fed6ca6ef0ba281890c09
https://doi.org/10.1088/0741-3335/46/7/001
https://doi.org/10.1088/0741-3335/46/7/001
Autor:
M. M. Sant’Anna, Carlos Renato de Carvalho, B. F. Magnani, A. C. F. Santos, N. V. de Castro Faria, R F Nascimento, Ginette Jalbert, Carla Roberta de Oliveira Carvalho, Alexandre B. Rocha
Publikováno v:
Physical Review A. 89
The electron-detachment cross section was measured for the molecular negative ions ${\mathrm{CN}}^{\ensuremath{-}}$ and ${\mathrm{O}}_{2}^{\ensuremath{-}}$ incident on N${}_{2}$, in the 0.08\char21{}1.2 a.u. velocity region. Our setup uses the gas st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d868f2f16e5d5fd7a5f486a8e584303
https://doi.org/10.1103/physreva.89.012712
https://doi.org/10.1103/physreva.89.012712
Autor:
Fabio Zappa, N. V. de Castro Faria, S. D. Magalhães, E. Bessa Filho, H. Luna, L. F. S. Coelho, Ginette Jalbert, J.C Acquadro
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 171:373-378
A simple method is proposed for measuring cross-sections of fast negative atomic and molecular ions colliding with atoms and molecules. The method, applicable to tandem accelerators, uses the stripping process of the negative ions, occurring at the g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::47201de57cabe0c82292e3a56178fc3d
https://doi.org/10.1016/s0168-583x(00)00264-0
https://doi.org/10.1016/s0168-583x(00)00264-0
Autor:
S. D. Magalhães, Roberto Meigikos dos Anjos, M M Coimbra, P. R. S. Gomes, Kita Macario, R. Liguori Neto, Carlos Roberto Appoloni, J.C Acquadro, Nemitala Added, Raul Donangelo, N. V. de Castro Faria, Guaciara M. Santos
Publikováno v:
Scopus-Elsevier
The status and the near future plans for the Brazilian AMS program are described. The 8 MV Tandem accelerator at the University of Sao Paulo (USP) is ready to measure standard AMS samples. A recently installed 1.7 MV Tandem at the University of Rio d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5e40afb0e9caecd0c27da0c062b68f0
https://doi.org/10.1016/s0168-583x(00)00145-2
https://doi.org/10.1016/s0168-583x(00)00145-2