Zobrazeno 1 - 5
of 5
pro vyhledávání: '"J S Wykes"'
Publikováno v:
Journal of Physics B: Atomic and Molecular Physics. 7:59-68
The polarization state of the photoelectrons emitted by an assembly of ground state alkali atoms illuminated by circularly polarized light is described in terms of the Stokes vector formalism. The results indicate that there are several different exp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f9e16b050eeae48d5e930e7c0995b2b
https://doi.org/10.1088/0022-3700/7/1/015
https://doi.org/10.1088/0022-3700/7/1/015
Publikováno v:
Proceedings of the Royal Society of Edinburgh. Section A. Mathematical and Physical Sciences. 68:158-184
SynopsisThe general paraxial particle-optic properties of the hexapole field are summarized and lens formulae derived. Formulae are given for the transmission as a function of particle velocity and system geometry for geometries appropriate to the ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de8d34fe099e4a27df54a680498d3ad2
https://doi.org/10.1017/s0080454100008347
https://doi.org/10.1017/s0080454100008347
Autor:
P S Farago, J S Wykes
Publikováno v:
Journal of Physics B: Atomic and Molecular Physics. 2:747-756
A method is suggested for measuring the polarization of low-energy electron beams by observing the polarization of the light emitted by mercury atoms following their excitation by electron impact. It is shown that the asymmetry of the left and right
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0679042c6b80b5340d3b6194cd5d655b
https://doi.org/10.1088/0022-3700/2/7/303
https://doi.org/10.1088/0022-3700/2/7/303
Publikováno v:
SPIE Proceedings.
This paper describes a novel fibre optic methane sensor which has several advantages over previously published fibre optic techniques. It is based on a scanning Fabry Perot etalon filter and is self-referencing, requiring only a single optical sensin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::19f1dc7d843b41f6fc08c5c9465814d7
https://doi.org/10.1117/12.938026
https://doi.org/10.1117/12.938026
Autor:
J S Wykes
Publikováno v:
Journal of Physics E: Scientific Instruments. 15:1386-1386
The author criticises a claim by Mehrdadi et al., (see ibid., vol.15, p.367-72, 1982) that the use of pseudorandom beam widths provides a better method of pulse/echo ranging on rough targets than conventional fixed beam shape pulse/echo systems since
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2579b57d4dc39040d4d7492ec2691992
https://doi.org/10.1088/0022-3735/15/12/026
https://doi.org/10.1088/0022-3735/15/12/026