Two-roton Raman scattering in $sup 3$He--$sup 4$He solutions

Journal Article · Mon May 28 04:00:00 EDT 1973 · Phys. Rev. Lett., v. 30, no. 22, pp. 1111-1114

OSTI ID:4416552

Surko, C M; Slusher, R E

The two-roton Raman spectra of superfluid solutions of He/sup 3/ and He/ sup 4 are measured at a temperature of 1.3 K for molar concentrations of He/sup up to 31%. At 31% He/sup 3/ concentration, the shift in the roton energy is inferred from these spectra to be +0.3 plus or minus 0.5 K, in striking contrast to the -3.5-K shift inferred from previous measurements of normal--fluid density. The width of the two-roton peak is resolved and is a measure of the He/sup 3/- roton interaction. (auth)

• Research Organization: Bell Laboratories, Murray Hill, New Jersey, 07974
• NSA Number: NSA-29-001528
• OSTI ID: 4416552
• Journal Information: Phys. Rev. Lett., v. 30, no. 22, pp. 1111-1114, Journal Name: Phys. Rev. Lett., v. 30, no. 22, pp. 1111-1114; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

*HELIUM II-- ROTONS
DISPERSION RELATIONS
HELIUM 3
N66100* --Physics (Low Temperature)--Superfluidity
SCATTERING
SOLUTIONS
SPECTRA
SPECTRAL SHIFT
SUPERFLUIDITY
TEMPERATURE DEPENDENCE
VERY LOW TEMPERATURE