Photoelectric Measurements of Sunspot Magnetic Fields
1971 ◽
Vol 43
◽
pp. 190-191
Keyword(s):
Photoelectric polarization measurements in a stable sunspot (type H) with a particularly dark umbra, where ‘umbral dots’ were virtually lacking, have been carried out with the Capri magnetograph. The measurements were evaluated in terms of Unno's theory to give the value and direction of the magnetic field vector. The parameters η0 = 5, β0 = 2.5 and ΔλD = 40mÅ have been adopted for the Fe I 5250 line. Taking the configuration of the sunspot into account as well as simple conditions of steadiness of the distributions to be obtained, it is possible to derive the magnetic vector field from two-dimensional records of circular and linear polarization without ambiguities.
1969 ◽
Vol 1
(6)
◽
pp. 274-276
◽
Magnetic fields end-face effect investigation of HTS bulk over PMG with 3D-modeling numerical method
2015 ◽
Vol 29
(25n26)
◽
pp. 1542041
Keyword(s):
Hts Bulk
◽
1966 ◽
Vol 293
(1434)
◽
pp. 342-358
◽
2015 ◽
Vol 26
(01)
◽
pp. 161-184
◽
2000 ◽
Vol 18
(4)
◽
pp. 601-610
◽
Keyword(s):
Keyword(s):
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2019 ◽
Vol 15
(S354)
◽
pp. 454-457
Keyword(s):
2009 ◽
Vol 23
(12n13)
◽
pp. 2566-2572
◽
Keyword(s):
Keyword(s):