Pressure broadening of the Hanle effect in a neon discharge

Carrington, C. G.; Corney, Alan

doi:10.1088/0022-3700/4/6/015

Cited by 44 publications

(33 citation statements)

References 17 publications

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“…Nevertheless the uncertainty of the measured data is relatively high. The Ne cross section for destruction of alignment shows a temperature dependence which agreeswithin the limit of error-with the temperature dependence ~ T 1/s calculated for a Van-der-Waals interaction [9,10]. The deviation of the corresponding He cross sections from this calculated temperature dependence can be explained by the interaction with the repulsive part of the potential.…”

Section: Temperature Dependence Of the Collision Cross Sectionsupporting

confidence: 79%

Disalignment collision cross sections of the neon levels 2p 4 and 2s 2 obtained by mode crossing

Graubner

Hermann

1978

Z Physik A

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Alignment destroying collision cross sections of the Ne levels 2p4 and 2s 2 were measured by investigation of the zero-field mode crossing resonances of a multimode He/Ne-laser operating on the 3Sz~2p4 (2=633 nm) and 2s2~2p ~ (2= 1.52gin) Ne transitions respectively. The measurements were carried out with the aid of a small sample cell which was placed inside the laser cavity and filled with pure Neon or a mixture of the He and Ne.Comparison of the measured cross sections concerning the 2p4 level with corresponding Hanle effect measurements shows that in multimode operation velocity changing collisions do not produce an additional broadening of the mode crossing resonances. The alignment destroying cross section is almost temperature independent in the case of He collisions; it decreases, however, with increasing temperature in the case of Ne. Due to the allowed dipol transition between the 2s 2 and the ground state of Ne, radiation trapping and resonance interaction takes place if the gas filling contains Ne. The effect on the mode crossing resonance width is investigated.

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Section: Temperature Dependence Of the Collision Cross Sectionsupporting

confidence: 79%

Disalignment collision cross sections of the neon levels 2p 4 and 2s 2 obtained by mode crossing

Graubner

Hermann

1978

Z Physik A

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“…This mechanism was discussed above in connection with the resonant 1s 4 level. In some sense, the optical depopulation could be described by accounting for the coherence created on the lower 3s levels in the process of alignment of the 3p levels during light reabsorption 1,2) .. 4. Formation of alignment due to electron collisions.…”

Section: Transfer Of Alignment From High-lying P-statesmentioning

confidence: 99%

“…A magnetic field applied along the symmetry axis will not affect these components. If the magnetic field is directed perpendicularly to the axis of anisotropy (for example along the Oy-axis) it is necesury to rotate the coordinate system using the rotation matrix D (2) kq . 25) .…”

Section: Transfer Of Alignment From High-lying P-statesmentioning

confidence: 99%

Peculiarities of the magneto-optical resonances on 2p⁵3s states in a NE glow discharge

Gorbenko¹,

Kuzmin²,

Polischuk³

et al. 2007

SPIE Proceedings

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In continuation of our previous works, systematic investigation of the magneto-optical (MO) resonances from the 3 1 (1s 4 ) (Pashen notation), 3 2 (1s 5 ), and 3 0 (1s 3 ) levels of NeI was carried out. This study aims to clarify the formation mechanisms of the neon 1s (2p 3s) states coherences. i 5 Anomalous MO resonances are experimentally observed and the possible mechanisms of their creation are discussed.

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“…Измерение поляризации излучения атмосферы Солнца уже давно используется для целей магнитометрии 4S - 81 . 44 .…”

Section: приложение эффекта самовыстраивания к задачам магнитометрии unclassified

“…Авторы связали это отклонение с проявлением близкодействую-щих сил отталкивания при взаимодействии сталкивающихся частиц. Проведенное в этом цикле работ изучение температурной зависимости сечений деполяризующих столкновений в широком диапазоне изменения температуры 81 , 110 показало ряд особенностей, которые не укладывались в рамки принятой модели столкновения. Для ряда уровней наблюдалась слабая зависимость сечения от температуры, не согласующаяся с теорией, что было объяснено отклонением в реальном случае траекторий движения сталкивающихся частиц от прямолинейной.…”

Section: (22)unclassified

Astrophysical and laboratory applications of self-alignment

Казанцев¹

1983

Usp. Fiz. Nauk

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Pressure broadening of the Hanle effect in a neon discharge

Cited by 44 publications

References 17 publications

Disalignment collision cross sections of the neon levels 2p 4 and 2s 2 obtained by mode crossing

Disalignment collision cross sections of the neon levels 2p 4 and 2s 2 obtained by mode crossing

Peculiarities of the magneto-optical resonances on 2p⁵3s states in a NE glow discharge

Astrophysical and laboratory applications of self-alignment

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Pressure broadening of the Hanle effect in a neon discharge

Cited by 44 publications

References 17 publications

Disalignment collision cross sections of the neon levels 2p 4 and 2s 2 obtained by mode crossing

Disalignment collision cross sections of the neon levels 2p 4 and 2s 2 obtained by mode crossing

Peculiarities of the magneto-optical resonances on 2p53s states in a NE glow discharge

Astrophysical and laboratory applications of self-alignment

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Peculiarities of the magneto-optical resonances on 2p⁵3s states in a NE glow discharge