Zobrazeno 1 - 10
of 80
pro vyhledávání: '"R. D. Birkhoff"'
Publikováno v:
Applied optics. 16(9)
In an attempt to improve the accuracy of reflectance determinations, particularly from high vapor pressure samples, we have built and tested a double ionization chamebr which measures the ionization from a photon beam in the vapor or added gas before
Publikováno v:
Physical Review A. 24:1176-1183
Publikováno v:
Review of Scientific Instruments. 54:100-103
An 8085‐based microprocessor system was developed to monitor and control the magnetic field in a three‐axis, Helmholtz‐coil cage for an electron energy‐loss apparatus. The nulling field produced by the coils is monitored by three RFL Industri
Autor:
J. D. Allen, Trinidad L. Ferrell, R. D. Birkhoff, Rufus H. Ritchie, H. H. Hubbell, D. P. Spears, R. S. Becker, V. E. Anderson
Publikováno v:
Journal of Applied Physics. 50:3039-3043
In exploring forces between charged particles and surfaces, we have sent a beam of low‐energy (0.5–40 eV) electrons through two (laser drilled) micron‐size pinholes in thin films of gold spaced 10 cm apart. Image forces associated with the soli
Publikováno v:
Journal of Nuclear Materials. 63:501-505
Calculations and measurements of optical reflectance of a gold substrate for various carbon overlayers suggested monitoring a Tokamak liner optically for contamination. A He-Ne laser beam directed at the inner surface of the ORM AK liner reflected ba
Publikováno v:
Journal of Aerosol Science. 11:461-466
The electrical force on a point charge in a conducting cylindrical channel is calculated exactly and compared with approximations used in the literature. The exact form is shown to lead to larger deposition rates for charges in a laminar flow in a vi
Publikováno v:
The Journal of Chemical Physics. 76:5208-5213
Our apparatus has been modified to permit measurements of absolute photoemission as well as reflectance of liquids in the vacuum UV. Photon fluxes are determined by filling the tandem ion chambers with argon. An electrometer is connected to the sampl
Publikováno v:
Journal of Applied Physics. 55:756-759
The reflectance of liquids squalane and squalene between 2 and 25 eV have been determined by closed cell double ionization chamber methods. Kramers–Kronig analysis of the data gives optical functions from which are calculated the dielectric functio
Publikováno v:
The Journal of Chemical Physics. 62:4121-4124
The optical properties of the liquids normal tetradecane (C14H30) and normal heptadecane (C17H36) were determined for photon energies from 4 to 25 eV. Near normal incidence (15 °) reflectance measurements were analyzed by a Kramers–Kronig method t
Publikováno v:
Physical Review B. 16:3049-3055
An electron slowing-down flux spectrum has been measured for ..beta.. particles, delta rays, and secondaries generated by the ..beta.. decay of neutron-activated /sup 164/Dy uniformly distributed in Al/sub 2/O/sub 3/. The energy range covered in thes