ZfN: Search Results

1	Author	D. N. Timms, M. J. Cooper	Requires cookie*
	Title	The Electron Momentum Distribution in Lead
	Abstract	Directional Compton profiles have been measured along the [100], [110] and [111] crystallo-graphic axes in lead using 412 and 59.5 keV y-radiation from 98 Au and Am radioisotope sources, respectively. Both measurements are in mutual agreement and show a small anisotropy, which is just distinguishable within the statistical error. The spherically averaged data have been compared with the predictions of relativistic Hartree-Fock (RHF) and non-relativistic Hartree-Fock (HF) free atom calculations. As expected, the experiment clearly favours the RHF rather than the HF calculation.
	Reference	Z. Naturforsch. 48a, 343—347 (1993); received January 11 1992
	Published	1993
	Keywords	Compton profile, Electron momentum distribution, Relative effects, Lead
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	TEI-XML for	default:Reihe_A/48/ZNA-1993-48a-0343.pdf
	Identifier	ZNA-1993-48a-0343
	Volume	48

2	Author	L. Dobrzyński	Requires cookie*
	Title	Recent Advances in Compton Scattering
	Abstract	A review of achievements in the field of Compton spectrometry in the years that elapsed from the last Sagamore meeting (1988) is presented. Some physical problems that have either appeared as new or became clarified are described. Special emphasis is put to the results obtained by means of magnetic Compton scattering.
	Reference	Z. Naturforsch. 48a, 266—272 (1993); received January 9 1992
	Published	1993
	Keywords	Compton scattering, Electron momentum distribution, Synchrotron radiation, Mag-netic materials
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	TEI-XML for	default:Reihe_A/48/ZNA-1993-48a-0266.pdf
	Identifier	ZNA-1993-48a-0266
	Volume	48

3	Author	B. K. Sharma	Requires cookie*
	Title	Compton Scattering from Heavier Metals
	Abstract	The use of Compton scattering in the determination of electronic structure has grown consider-ably in the last two decades. With the advent of synchrotron radiation it has become possible, even with good resolution, to measure several single-crystal orientations to determine three-dimensional electron momentum distributions. Although most of the earlier work has been directed to low-Z materials, in the last few years medium and high-Z metals have also been investigated with this technique. In this paper we present a review of these studies on heavier metals with particular attention to the difficulties encountered. Compton profile measurements from techniques based on energetic ion beams are also considered briefly.
	Reference	Z. Naturforsch. 48a, 334—342 (1993); received December 31 1991
	Published	1993
	Keywords	Compton profiles, Electron momentum distributions, Electronic structure, Brems-strahlung, Ion Compton profile
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	TEI-XML for	default:Reihe_A/48/ZNA-1993-48a-0334.pdf
	Identifier	ZNA-1993-48a-0334
	Volume	48

4	Author	B. L. Ahuja, Anil Gupta, B. K. Sharma	Requires cookie*
	Title	Compton Profile of Boron Nitride
	Abstract	The Compton profile of hexagonal boron nitride has been measured using 59.54 keV gamma rays and a planar Ge detector. The results are compared with theoretical Compton profiles calculated for various ionic arrangements and with those available from a bond orbital model, LCAO and SC canonical HF calculations. The LCAO calculation is in relatively good agreement with the present measurement.
	Reference	Z. Naturforsch. 48a, 310—314 (1993); received December 31 1991
	Published	1993
	Keywords	Compton profile, Electron momentum distribution, Hartree-Fock calculation, Ionic model, Linear combination of atomic orbitals
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	TEI-XML for	default:Reihe_A/48/ZNA-1993-48a-0310.pdf
	Identifier	ZNA-1993-48a-0310
	Volume	48