Contact
schliessen

Filtern

 

Bibliotheken

Logo der Bibliothek

Siegel TU Braunschweig Universitätsbibliothek Braunschweig
You do not seem to be within the network of Braunschweig University.
As student, researcher or staff member of Braunschweig University you can use the VPN service to gain access to electronic publications.
Alternatively, you can use your university username and password via Shibboleth to gain access to electronic publications with certain publishers. You can find more details in our Blog (in German).

Sound experiments on superfluidity of 3He in highly porous aerogels

We have carried out sound experiments on superfluid 3He in three highly porous aerogels with different porosities. Two of the acoustic cells contain aerogels inside the pores in roughly sintered silver powder to avoid the vibration of the aerogel. In these acoustic cells we have detected fourth soun... Full description

Published: New York, Kluwer Academic/Plenum Publishers, 2000
Kongresse: International Symposium on Quantum Fluids and Solids 2000 2000.06.06-2000.06.11 Minneapolis, MN, US
QFS 2000 2000.06.06-2000.06.11 Minneapolis, MN, US
International Symposium on Quantum Fluids and Solids 2000.06.06-2000.06.11 Minneapolis, MN, US
QFS 2000 2000.06.06-2000.06.11 Minneapolis, MN, US
Contained in: Journal of Low Temperature Physics Vol. 121, No. 5-6 (2000), p. 573-578
Fulltext access:
Availability is being checked...
Interlibrary loan: Check possibility for interlibrary loan
ISSN: 0022-2291
Additional Keywords: AEROGEL
AKUSTISCHE-EIGENSCHAFT
APPROXIMATIONSTHEORIE
DICHTE:MASSE
DRUCKEINFLUSS
FLUESSIGHELIUM
MESSEN-AKUSTISCHER-GROESSEN
PORENGROESSE
POROSITAET
SCHALLSTREUUNG
SILBER
SINTERTECHNIK
UEBERGANGSTEMPERATUR
Notes: Copyright: Metadaten: TEMA, Copyright WTI-Frankfurt eG
Copyright: (C) Alle Rechte beim Herausgeber
Physical Description: 6 Seiten, 11 Quellen
PPN (Catalogue-ID): WTI038053861
Note: WTI TEMA DB
more publication details ...

Associated Publications/Volumes

  • Associated records are being queried...
more (+)
Internes Format
LEADER 03129naa a2200481 c 4500
001 WTI038053861
003 DE-601
005 20190330042952.0
008 171222s2000 000 0 und d
028 5 2 |a TEMA2001_wti_pica 
035 |a (DE-599)WTI20010500132 
040 |b ger  |c GBVCP 
084 |a E  |2 FIZTtc 
084 |a 3BB  |a 3IFA  |a 3BN  |2 FON2006 
245 0 0 |a Sound experiments on superfluidity of 3He in highly porous aerogels 
264 3 1 |a New York  |b Kluwer Academic/Plenum Publishers  |c 2000 
300 |a 6 Seiten, 11 Quellen 
500 |a Copyright: Metadaten: TEMA, Copyright WTI-Frankfurt eG 
500 |a Copyright: (C) Alle Rechte beim Herausgeber 
520 |a We have carried out sound experiments on superfluid 3He in three highly porous aerogels with different porosities. Two of the acoustic cells contain aerogels inside the pores in roughly sintered silver powder to avoid the vibration of the aerogel. In these acoustic cells we have detected fourth sound, and extracted the superfluid density from the fourth sound velocity. The effect of the sintered silver on superfluid 3He was examined by using another acoustic cell which contains the sintered silver without aerogel. The size of the pores in the sintered silver was large enough not to show the size effect of superfluid 3He and small enough to observe fourth sound of 3He. In another cell without sintered silver, we have observed second-sound-like signal. The superfluid transition temperatures of 3He are suppressed more in higher density aerogel. The aerogel density dependence of the suppression of the superfluid transition temperature of 3He in aerogel can be explained qualitatively by the simple s-wave scattering approximation. However, the superfluid density shows quite different pressure-dependence in different porous aerogels. The reason of this phenomenon is not understood yet. 
653 4 |a AKUSTISCHE-EIGENSCHAFT 
653 4 |a AEROGEL 
653 4 |a POROSITAET 
653 4 |a SILBER 
653 4 |a SINTERTECHNIK 
653 4 |a DICHTE:MASSE 
653 4 |a PORENGROESSE 
653 4 |a SCHALLSTREUUNG 
653 4 |a APPROXIMATIONSTHEORIE 
653 4 |a DRUCKEINFLUSS 
653 4 |a MESSEN-AKUSTISCHER-GROESSEN 
653 4 |a UEBERGANGSTEMPERATUR 
653 4 |a FLUESSIGHELIUM 
711 2 |a International Symposium on Quantum Fluids and Solids  |n 2000  |d 2000.06.06-2000.06.11  |c Minneapolis, MN, US 
711 2 |a QFS  |n 2000  |d 2000.06.06-2000.06.11  |c Minneapolis, MN, US 
711 2 |a International Symposium on Quantum Fluids and Solids  |d 2000.06.06-2000.06.11  |c Minneapolis, MN, US 
711 2 |a QFS  |n 2000  |d 2000.06.06-2000.06.11  |c Minneapolis, MN, US 
773 0 8 |i In  |t Journal of Low Temperature Physics  |g Vol. 121, No. 5-6 (2000), p. 573-578  |q 121:5-6<573-578  |x 0022-2291  |x 0022-2291 
912 |a GBV_WTI 
950 |a akustische Eigenschaft  |a Aerogel  |a Porosität  |a Silber  |a Sintern  |a Dichte (Masse)  |a Porengröße  |a Schallstreuung  |a Approximationstheorie  |a Druckeinfluss  |a Messen akustischer Größen  |a Übergangstemperatur  |a Flüssighelium  |2 DE-601 
950 |a suprafluides Helium  |2 DE-601 
951 |a AR 
952 |d 121  |j 2000  |e 5-6  |h 573-578