Characterisation and optimisation of flexible transfer lines for liquid helium. Part I: Experimental results

Cryogenics ◽  
2016 ◽  
Vol 75 ◽  
pp. 6-12 ◽  
Author(s):  
N. Dittmar ◽  
Ch. Haberstroh ◽  
U. Hesse ◽  
M. Krzyzowski
Keyword(s):  
Liquid Helium ◽  
Experimental Results ◽  
Transfer Lines ◽  
Flexible Transfer Lines

scholarly journals Onset of Thermoacoustic Oscillations in Flexible Transfer Lines for Liquid Helium

2015 ◽  
Vol 67 ◽  
pp. 348-353 ◽  
Author(s):  
N. Dittmar ◽  
S. Kloeppel ◽  
Ch. Haberstroh ◽  
U. Hesse ◽  
M. Wolfram ◽  
...  
Keyword(s):  
Liquid Helium ◽  
Transfer Lines ◽  
Flexible Transfer Lines ◽  
Thermoacoustic Oscillations

Characterisation and optimisation of flexible transfer lines for liquid helium. Part II: Thermohydraulic modelling

Cryogenics ◽  
2016 ◽  
Vol 79 ◽  
pp. 53-62
Author(s):  
N. Dittmar ◽  
Ch. Haberstroh ◽  
U. Hesse ◽  
M. Krzyzowski
Keyword(s):  
Liquid Helium ◽  
Transfer Lines ◽  
Flexible Transfer Lines

scholarly journals Long flexible transfer lines for gaseous and liquid helium

Cryogenics ◽  
1978 ◽  
Vol 18 (12) ◽  
pp. 659-662 ◽  
Author(s):  
H. Laeger ◽  
Ph. Lebrun ◽  
P. Rohner
Keyword(s):  
Liquid Helium ◽  
Transfer Lines ◽  
Flexible Transfer Lines

scholarly journals PHOTO-EXCITED ZERO-RESISTANCE STATES IN THE GaAs/AlGaAs SYSTEM

2004 ◽  
Vol 18 (27n29) ◽  
pp. 3473-3480 ◽  
Author(s):  
R. G. MANI
Keyword(s):  
Effective Mass ◽  
Liquid Helium ◽  
High Mobility ◽  
Microwave Frequency ◽  
Electron System ◽  
Experimental Results ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Dimensional Electron System ◽  
Zero Resistance

The microwave-excited high mobility two-dimensional electron system exhibits, at liquid helium temperatures, vanishing resistance in the vicinity of B=[4/(4j+1)]Bf, where Bf=2πfm*/e, m* is an effective mass, e is the charge, and f is the microwave frequency. Here, we summarize some experimental results.

A study of the quantum oscillations in the thermopower of molybdenum

1982 ◽  
Vol 60 (2) ◽  
pp. 122-130 ◽  
Author(s):  
R. Fletcher
Keyword(s):  
Liquid Helium ◽  
Field Dependence ◽  
Large Amplitude ◽  
Experimental Results ◽  
Quantum Oscillations ◽  
Magnetic Breakdown ◽  
Good Agreement

This paper is concerned with quantum oscillations in the thermoelectric coefficients of metals which do not undergo magnetic breakdown, and in particular focuses on the compensated metal Mo. An expression for the amplitude of the oscillations in the thermopower has been developed and is tested using a detailed set of experimental results on Mo taken with [Formula: see text] over the range 1.5–8 T at liquid helium temperatures. Good agreement is obtained for the temperature and field dependence, and absolute amplitudes are predicted to within a factor near unity. Oscillations of appreciable amplitude arc neither expected nor observed in the Nernst–Ettingshausen (N.E.) coefficient of Mo. Available thermopower data on In have also been analysed; it is concluded that, contrary to a previous speculation. In does not undergo magnetic breakdown at fields of the order of 2 T. It is suggested that, contrary to the thermopower. the N.E. coefficient will provide an unambiguous test for the occurrence of breakdown in metals since it is expected to exhibit large amplitude quantum oscillations only under breakdown conditions.

Sign in / Sign up

Export Citation Format

Share Document