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An adjustable curved crystal monochromator for X-ray diffraction analysis
Springer Science and Business Media LLC - Tập 1 - Trang 119-126 - 1950
P. M. De Wolff
The logarithmic spiral form of Barrau d’s monochromator can be obtained to a good approximation by exerting unequal bending moments on the short edges of a rectangular crystal plate. In the first two paragraphs some aberration formulas are derived pertaining to the asymetrical Barraud -type monochromator. In § 4 the new way of mounting is described. The aberration due to its approximative characte...... hiện toàn bộ
Cylindrical and spherical shock waves in monatomic conducting fluids
Springer Science and Business Media LLC - Tập 10 Số 2 - Trang 119-128 - 1962
Roy M. Gundersen
Sphere and circle theorems involving surface discontinuities of potential
Springer Science and Business Media LLC - Tập 8 - Trang 254-258 - 1960
G. Power, H. L. W. Jackson
New sphere and circle theorems are presented which allow for discontinuities of potential at the surface of separation and are thus of special importance in heat problems where the ‘radiation’ boundary condition applies. Moreover these theorems permit results to be obtained in particular cases which agree with those deduced from previous theorems.
Method of obtaining information on the internal dielectric constant of mixtures
Springer Science and Business Media LLC - Tập 3 - Trang 479-482 - 1954
G. P. De Loor
Impedance boundary conditions for statistically rough surfaces
Springer Science and Business Media LLC - Tập 8 - Trang 437-462 - 1960
T. B. A. Senior
It is shown that for an electromagnetic field incident on a perfectly conducting surface having small geometrical irregularities which are distributed at random but in a statistically uniform and isotropic manner, the boundary condition can be replaced by a generalized impedance condition applied at a neighbouring mean surface. The surface impedance is a tensor function of the direction at which t...... hiện toàn bộ
Singular surfaces of order one in magnetogasdynamics
Springer Science and Business Media LLC - - 1965
Chaitanya Kaul
Magnetisches verhalten und bandbesetzung in den reihen aluminium-mangan und silber-blei
Springer Science and Business Media LLC - Tập 4 - Trang 34-42 - 1955
E. von Vogt
Aus magnetischen Messungen folgt: In der Phase MnAl6 befindet sich das Mn gröβtenteils im diamagnetischend10-Zustand, was Raynor schon auf Grund der Zusammensetzung der Al-reichsten intermediären Phasen mit Übergangselementen vermutet hatte. Der Abschluβ derdSchale ist weniger vollständig, wenn Mn-Atome in das Al-Gitter eingebaut werden, und in der Phase"MnAl4". — Bei der Lösung von Pb im Ag-Gitte...... hiện toàn bộ
The efficiency of halogen-quenched geiger-counters for X-rays
Springer Science and Business Media LLC - Tập 4 - Trang 196-204 - 1955
D. Van Zoonen
The efficiency of two argon-bromine counters is determined for Mo-Kα, Cu-Kα and Cr-Kα quanta as a function of the overvoltage and as a function of the distance from the axis where the quanta are absorbed. The efficiency drops sharply at greater distances from the wire. This effect is partially ameliorated at higher overvoltages. The more energetic X-ray quanta show a higher relative efficiency in ...... hiện toàn bộ
Radiocarbon dating in Trondheim
Springer Science and Business Media LLC - Tập 6 - Trang 393-400 - 1957
R. Nydal, R. S. Sigmond
Naturally occurring radiocarbon is registered in a proportional counter filled with pure CO2. The CO2 gas is purified in almost the same manner as has been developed by De Vries and Barendsen. Checking of the gas purity is described. A grid proportional counter with an effective volume of about 2.5 liter has been used with CO2-pressures from 1 to 4 atmospheres. At a pressure of 4 atmospheres the n...... hiện toàn bộ
Laminar stagnation flow of an electrically conducting fluid against an infinite plate in the presence of a transverse magnetic field
Springer Science and Business Media LLC - Tập 9 - Trang 45-50 - 1961
A. S. Gupta
The two-dimensional stagnation flow of an electrically conducting, incompressible and viscous fluid against a plane wall is investigated for the case when the induced field is negligible compared to the imposed transverse magnetic field. It is found that the component of the velocity parallel to the plate as well as the drag coefficient decrease with the increase in the magnetic field. Furthermore...... hiện toàn bộ
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