Cyclotron resonance maser experiment in a nondispersive waveguide

Eli Jerby; Avi Shahadi; Rami Drori; Michael Korol; Moshe Einat; Marat Sheinin; Vladimir Dikhtiar; Vladimir Grinberg; Moshe Bensal; Tal Harhel; Yitzchak Baron; Amnon Fruchtman

doi:10.1109/27.533084

Cyclotron resonance maser experiment in a nondispersive waveguide

Eli Jerby, Avi Shahadi, Rami Drori, Michael Korol, Moshe Einat, Marat Sheinin, Vladimir Dikhtiar, Vladimir Grinberg, Moshe Bensal, Tal Harhel, Yitzchak Baron, Amnon Fruchtman

Research output: Contribution to journal › Article › peer-review

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Abstract

A cyclotron-resonance maser (CUM) oscillator experiment in which a spiraling electron beam interacts with a transverse electromagnetic wave in a nondispersive waveguide is presented. The experiment employs a low-energy (<5 keV) low-current (<1 A) electron beam in a two-wire (Lecher type) waveguide. The microwave output frequency is tuned in this experiment by the axial magnetic field in the range 3.5-6.0 GHz. A second harmonic emission is observed at ∼7 GHz. CRM theory shows that in a free-space TEM-mode interaction, the gain might be canceled due to the equal and opposite effects of the axial (Weibel) and the azimuthal bunching mechanisms. This balance is violated in the large transverse velocity regime (V_⊥ ≫ V_z) in which our experiment operates. The tunability measurements of the CRM oscillator experiment in the nondispersive waveguide are discussed in view of the CRM theory.

Original language	English
Pages (from-to)	816-824
Number of pages	9
Journal	IEEE Transactions on Plasma Science
Volume	24
Issue number	3
DOIs	https://doi.org/10.1109/27.533084
State	Published - 1996
Externally published	Yes

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title = "Cyclotron resonance maser experiment in a nondispersive waveguide",

abstract = "A cyclotron-resonance maser (CUM) oscillator experiment in which a spiraling electron beam interacts with a transverse electromagnetic wave in a nondispersive waveguide is presented. The experiment employs a low-energy (<5 keV) low-current (<1 A) electron beam in a two-wire (Lecher type) waveguide. The microwave output frequency is tuned in this experiment by the axial magnetic field in the range 3.5-6.0 GHz. A second harmonic emission is observed at ∼7 GHz. CRM theory shows that in a free-space TEM-mode interaction, the gain might be canceled due to the equal and opposite effects of the axial (Weibel) and the azimuthal bunching mechanisms. This balance is violated in the large transverse velocity regime (V⊥ ≫ Vz) in which our experiment operates. The tunability measurements of the CRM oscillator experiment in the nondispersive waveguide are discussed in view of the CRM theory.",

author = "Eli Jerby and Avi Shahadi and Rami Drori and Michael Korol and Moshe Einat and Marat Sheinin and Vladimir Dikhtiar and Vladimir Grinberg and Moshe Bensal and Tal Harhel and Yitzchak Baron and Amnon Fruchtman",

note = "Funding Information: This research is supported by the Israeli Ministry of Energy and by the Belfer Foundationf or Energy Research.",

year = "1996",

doi = "10.1109/27.533084",

language = "אנגלית",

volume = "24",

pages = "816--824",

journal = "IEEE Transactions on Plasma Science",

issn = "0093-3813",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

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TY - JOUR

T1 - Cyclotron resonance maser experiment in a nondispersive waveguide

AU - Jerby, Eli

AU - Shahadi, Avi

AU - Drori, Rami

AU - Korol, Michael

AU - Einat, Moshe

AU - Sheinin, Marat

AU - Dikhtiar, Vladimir

AU - Grinberg, Vladimir

AU - Bensal, Moshe

AU - Harhel, Tal

AU - Baron, Yitzchak

AU - Fruchtman, Amnon

N1 - Funding Information: This research is supported by the Israeli Ministry of Energy and by the Belfer Foundationf or Energy Research.

PY - 1996

Y1 - 1996

N2 - A cyclotron-resonance maser (CUM) oscillator experiment in which a spiraling electron beam interacts with a transverse electromagnetic wave in a nondispersive waveguide is presented. The experiment employs a low-energy (<5 keV) low-current (<1 A) electron beam in a two-wire (Lecher type) waveguide. The microwave output frequency is tuned in this experiment by the axial magnetic field in the range 3.5-6.0 GHz. A second harmonic emission is observed at ∼7 GHz. CRM theory shows that in a free-space TEM-mode interaction, the gain might be canceled due to the equal and opposite effects of the axial (Weibel) and the azimuthal bunching mechanisms. This balance is violated in the large transverse velocity regime (V⊥ ≫ Vz) in which our experiment operates. The tunability measurements of the CRM oscillator experiment in the nondispersive waveguide are discussed in view of the CRM theory.

AB - A cyclotron-resonance maser (CUM) oscillator experiment in which a spiraling electron beam interacts with a transverse electromagnetic wave in a nondispersive waveguide is presented. The experiment employs a low-energy (<5 keV) low-current (<1 A) electron beam in a two-wire (Lecher type) waveguide. The microwave output frequency is tuned in this experiment by the axial magnetic field in the range 3.5-6.0 GHz. A second harmonic emission is observed at ∼7 GHz. CRM theory shows that in a free-space TEM-mode interaction, the gain might be canceled due to the equal and opposite effects of the axial (Weibel) and the azimuthal bunching mechanisms. This balance is violated in the large transverse velocity regime (V⊥ ≫ Vz) in which our experiment operates. The tunability measurements of the CRM oscillator experiment in the nondispersive waveguide are discussed in view of the CRM theory.

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VL - 24

SP - 816

EP - 824

JO - IEEE Transactions on Plasma Science

JF - IEEE Transactions on Plasma Science

IS - 3

ER -

Cyclotron resonance maser experiment in a nondispersive waveguide

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