Optical detection of magnetic field with Mn4+:K2SiF6 phosphor from room to liquid helium temperatures

2017 ◽  
Vol 110 (21) ◽  
pp. 212405 ◽  
Author(s):  
Zhiqiang Zhong ◽  
Xia Wang ◽  
Junpei Zhang ◽  
Haizheng Zhong ◽  
Jun-Bo Han
Keyword(s):  
Magnetic Field ◽  
Liquid Helium ◽  
Optical Detection

Quantum transport of surface electrons over liquid helium in magnetic field

1993 ◽  
Vol 91 (5-6) ◽  
pp. 371-389 ◽  
Author(s):  
Yu. Z. Kovdrya ◽  
V. A. Nikolayenko ◽  
O. I. Kirichek ◽  
S. S. Sokolov ◽  
V. N. Grigor'ev
Keyword(s):  
Magnetic Field ◽  
Liquid Helium ◽  
Quantum Transport ◽  
Surface Electrons

Magnetic field detrapping of polaronic electrons on films of liquid helium

1984 ◽  
Vol 30 (8) ◽  
pp. 4196-4202 ◽  
Author(s):  
S. A. Jackson ◽  
F. M. Peeters
Keyword(s):  
Magnetic Field ◽  
Liquid Helium

Room Temperature Sample Scanning SQUID Microscope for Imaging the Magnetic Fields of Geological Specimens

2013 ◽  
Vol 475-476 ◽  
pp. 3-6 ◽  
Author(s):  
Qing Meng Wang ◽  
Hua Feng Qin ◽  
Qing Song Liu ◽  
Tao Song
Keyword(s):  
Magnetic Field ◽  
Low Temperature ◽  
Magnetic Fields ◽  
Liquid Helium ◽  
Quantum Interference ◽  
Three Dimensional ◽  
Input Circuit ◽  
Pickup Coil ◽  
Weak Magnetic Fields ◽  
Scanning Squid

A microscope to image weak magnetic fields using a low-temperature superconducting quantum interference device (SQUID) had developed with a liquid helium consumption rate of ~0.5L/hour. The gradient pickup coil is made by a low-temperature superconducting niobium wire with a diameter of 66 μm, which is coupled to the input circuit of the SQUID and is then enwound on the sapphire bobbin. Both of the pickup coil and the SQUID sensor are installed in a red copper cold finger, which is thermally anchored to the liquid helium evaporation platform in the vacuum space of the cryostat. To reduce the distance between the pickup coil and sample, a 100 μm thick sapphire window is nestled up to the bottom of the cryostat. A three-dimensional scanning stage platform with a 50 cm Teflon sample rack under the sapphire window had the precision of 10 μm. To test the fidelity of the new facility, the distribution of the magnetic field of basalt slice specimens was determined. Results show that the spatial resolution of the newly-designed facility is 500 μm with a gradient magnetic field sensitivity of 380fT. This opens new opportunities in examining the distribution of magnetic assemblages in samples, which bear great geological and geophysical information.

Magnetic-field influence on polaronic electrons on liquid-helium films

1991 ◽  
Vol 43 (13) ◽  
pp. 11384-11387 ◽  
Author(s):  
D. L. Lin ◽  
C. Y. Chen ◽  
P. W. Jin
Keyword(s):  
Magnetic Field ◽  
Liquid Helium ◽  
Helium Films ◽  
Field Influence

Helium gas bubble trapped in liquid helium in high magnetic field

2014 ◽  
Vol 104 (13) ◽  
pp. 133511 ◽  
Author(s):  
H. Bai ◽  
S. T. Hannahs ◽  
W. D. Markiewicz ◽  
H. W. Weijers
Keyword(s):  
Magnetic Field ◽  
Liquid Helium ◽  
High Magnetic Field ◽  
Gas Bubble ◽  
Helium Gas

Optical detection of 2DEG in GaN/AlGaN structures - High magnetic field studies

2003 ◽  
Vol 1 (2) ◽  
pp. 193-197
Author(s):  
B. Chwalis ◽  
A. Wysmołek ◽  
R. Stępniewski ◽  
M. Potemski ◽  
W. Knap ◽  
...  
Keyword(s):  
Magnetic Field ◽  
High Magnetic Field ◽  
Optical Detection ◽  
Field Studies
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