Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Frank S. Tomkins"'
Publikováno v:
Journal of the Optical Society of America. 37(4)
A system of spectrochemical analysis is described in which 0.1 ml of a hydrochloric acid solution of the sample is evaporated on the ends of a pair of flat-topped copper electrodes which are then excited in a spark. Absolute sensitivities for differe
Autor:
Frank S. Tomkins, B Ercoli
Publikováno v:
Applied optics. 6(8)
A miniaturized King-type furnace has been constructed, which consists of an inductively heated, small diameter tantalum tube supported in a radiation shield of unconventional design. Because of the clean construction, useful metal vapor absorption sp
Autor:
Rita Mahon, Frank S. Tomkins
Publikováno v:
Optics letters. 7(7)
Continuously tunable, narrow-band radiation is generated in Hg vapor from the 11(p) (1)P(1) transition at 1220 A, through the series limit at 1187.9 A, and on out to 1174 A. This range includes the resonance transitions of neutral atomic hydrogen, de
Publikováno v:
Optics letters. 6(1)
When 1182-A radiation is generated by frequency tripling in xenon, interference is observed between the radiation generated at the two orthogonal-line foci that result from the astigmatism introduced by the focusing optics. Effects produced by a rota
Autor:
Frank S. Tomkins, Rita Mahon
Publikováno v:
Optics letters. 6(4)
Mercury vapor has been used as a nonlinear frequency upconverting medium to generate peak powers of 5 kW at 1251 A in a bandwidth of 0.04 cm(-1) with a 10-Hz tunable system. The energy conversion efficiency is 0.3%. Parametric oscillation at the Hg r
Publikováno v:
Optics letters. 4(11)
Radiation was generated between 1210 and 1230 A by four-wave sum mixing in beryllium vapor where the 2s(2)(1)S-2s3d(1)D transition was two-photon resonant. Results indicate that beryllium will be an efficient nonlinear medium in this spectral region
Publikováno v:
Journal de Physique. 35:483-495
L'etude a haute resolution du spectre d'etincelle de l'isotope 229 du thorium, dans le domaine infra-rouge situe entre 1 et 3 μ, a ete effectuee par spectrometrie de Fourier. La determination des fonctions d'onde des configurations paires (ds2, d2 s
Publikováno v:
Physical Review A. 21:861-871
Autor:
G. H. Dieke, Frank S. Tomkins
Publikováno v:
Physical Review. 76:283-289
The spectra of TH and ${\mathrm{T}}_{2}$ were photographed under high dispersion. The analysis of the $3p^{3}\ensuremath{\Pi}\ensuremath{\rightarrow}2s^{3}\ensuremath{\Sigma}$ bands of these molecules is presented and the constants of the two states
Autor:
Frank S. Tomkins, G. H. Dieke
Publikováno v:
Physical Review. 82:796-807
The molecular spectra of TH and ${\mathrm{T}}_{2}$ were photographed under high dispersion. The classification of the $3{p}^{3}\ensuremath{\Sigma}\ensuremath{\rightarrow}2{s}^{3}\ensuremath{\Sigma}$-system is given for these two molecules as well as