Accession Number:

AD0759958

Title:

Superfluid Cooling of Heated Wires in Liquid Helium.

Descriptive Note:

Final rept. Feb 70-Oct 72,

Corporate Author:

VIRGINIA UNIV CHARLOTTESVILLE

Personal Author(s):

• Hereford,Frank L.
• Spangler,Glenn E.

Report Date:

1972-12-01

Pagination or Media Count:

30.0

Abstract:

Investigations are concerned with the phenomena associated with the heating of small diameter wires immersed in superfluid liquid helium. Experimental results are presented relating to the critical heat currents associated with the appearance and disappearance of stable vapor films surrounding heated wires. These experiments were carried out at helium bath temperatures between 1.4K and 2.18K. Variation of the critical wattages with fluid pressure and temperature were ovserved. The results of measurements performed at temperatures below 1K are described. Author Modified Abstract

Descriptors:

• *ELECTRIC WIRE
• CRYOGENICS
• HEATING
• ELECTRIC CURRENT
• VOLTAGE
• LIQUEFIED GASES
• SUPERFLUIDITY

Subject Categories:

• Electrical and Electronic Equipment
• Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE