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Kerr effect in liquid helium at temperatures below the superfluid transition.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Sushkov, Alexander O. Williams, Edward Yashchuk, Valeriy V. Budker, Dmitry Lamoreaux, Steve K. |
| Copyright Year | 2004 |
| Abstract | The electro-optical Kerr effect induced by a slowly varying electric field in liquid helium at temperatures below the lambda point is investigated. The Kerr constant of liquid helium is measured to be (1.43+/-0.02(stat)+/-0.04(sys)) x 10(-20) (cm/V)(2) at T=1.5 K. Within experimental uncertainty, the Kerr constant is independent of temperature in the range T=1.5 K to 2.17 K, which implies that the Kerr constant of the superfluid component of liquid helium is the same as that of normal liquid helium. Pair and higher correlations of He atoms in the liquid phase account for about 23% of the measured Kerr constant. Liquid nitrogen was used to test the experimental setup; the result for the liquid nitrogen Kerr constant is (4.38+/-0.15) x 10(-18) (cm/V)(2). Kerr effect can be used as a noncontact technique for measuring the magnitude and mapping out the distribution of electric fields inside these cryogenic insulants. |
| Starting Page | 153003 |
| Ending Page | 153003 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://cds.cern.ch/record/727791/files/0403143.pdf |
| PubMed reference number | 15524873v1 |
| Volume Number | 93 |
| Issue Number | 15 |
| Journal | Physical review letters |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Helium Liquid nitrogen Preparation electric field |
| Content Type | Text |
| Resource Type | Article |