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Titolo:
EXPERIMENTAL-DETERMINATION OF THE LONG-RANGE POTENTIAL OF ARGON PAIRSBY MEANS OF SMALL-ANGLE NEUTRON-DIFFRACTION
Autore:
MAGLI R; BAROCCHI F; CHIEUX P; FONTANA R;
Indirizzi:
UNIV FLORENCE,DIPARTIMENTO ENERGET,VIA S MARTA 3 I-50139 FLORENCE ITALY UNIV FLORENCE,DIPARTIMENTO FIS I-50125 FLORENCE ITALY IST NAZL FIS MAT,SEZ FIRENZE I-50125 FLORENCE ITALY UNIV FLORENCE,DIPARTIMENTO ELETTRON I-50139 FLORENCE ITALY
Titolo Testata:
Physical review letters
fascicolo: 5, volume: 77, anno: 1996,
pagine: 846 - 848
SICI:
0031-9007(1996)77:5<846:EOTLPO>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
COEFFICIENTS; SCATTERING; LIQUIDS; FORCES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
15
Recensione:
Indirizzi per estratti:
Citazione:
R. Magli et al., "EXPERIMENTAL-DETERMINATION OF THE LONG-RANGE POTENTIAL OF ARGON PAIRSBY MEANS OF SMALL-ANGLE NEUTRON-DIFFRACTION", Physical review letters, 77(5), 1996, pp. 846-848

Abstract

We have experimentally determined the static structure factor S(k) inlow density argon gas for 1.0 < k < 3.5 nm(-1), by means of the small-angle neutron scattering diffractometer PAXE at Laboratoire Leon Brillouin in Saclay. The experiment has bean performed at three number densities between 1.51 x 10(27) and 2.30 x 10(27) m(-3) along the T = 138.75 K isotherm. From the data the small-k dependence of the Fourier transform c(k) of the direct correlation function c(r) has been derived and the existence of the \k\(3) term in the behavior of c(k) experimentally demonstrated. The experiment has allowed the first direct measurement of the coefficient C-6 of the London dispersion interaction in the pair potential of argon.

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Documento generato il 11/08/20 alle ore 15:50:17