Excitons in bulk liquid 4He -: art. no. 233107

被引：14

作者：

Arms, DA ^{[1
]}

Graber, TJ

Macrander, AT

Simmons, RO

Schwoerer-Böhning, M

Zhong, Y

机构：

[1] Argonne Natl Lab, Adv Photon Source, Expt Facil Div, Argonne, IL 60439 USA

[2] Univ Chicago, Consortium Adv Radiat Sources, Chicago, IL 60637 USA

[3] Univ Illinois, Dept Phys, Urbana, IL 61801 USA

[4] Univ Illinois, Frederick Seitz Mat Res Lab, Urbana, IL 61801 USA

[5] ACCEL Instruments GmbH, Bergisch Gladbach, Germany

来源：

PHYSICAL REVIEW B | 2005年 / 71卷 / 23期

关键词：

D O I：

10.1103/PhysRevB.71.233107

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present the first measurements of excitons in bulk liquid He, performed at several densities. Inelastic x-ray scattering was used to take these measurements of He-4. The exciton measurements are very similar to those for solid He-4, with the exciton excitations occurring at nearly the same energy transfers for the same pressure. This similarity suggests that excitons in solid helium rely mostly on short range order. The measured peaks for the liquid are asymmetric in nature and fit well to two Gaussians, suggesting that at least two exciton transitions are present in the signal peak.

引用

页数：4

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