Superradiant and Stimulated Superradiant Emission in a Prebunched Beam Free-Electron Maser

Arbel, Michael; Abramovich, Amir; Eichenbaum, A.; Gover, A.; Kleinman, H.; Pinhasi, Y.; Yakover, I.M.

doi:10.1103/physrevlett.86.2561

Cited by 34 publications

(40 citation statements)

References 16 publications

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“…The gain phase curves obtained are similar to the curve of the pre-bunched FEL total output power dependence on the phase delay between the bunching and FEL input fields, in the work done by Arbel et al [25]. The power at the output cavity varies as the cosine of the phase angle of the electron beam as it enters the output cavity (to interact with the EM wave) [25]. The results obtained are consistent with the equation…”

Section: Resultssupporting

confidence: 77%

The Experimental Results of a Low Power X-Band Free Electron Maser by Electron Pre-Bunching

Malek¹,

Lucas²,

Huang³

2010

PIER

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Abstract-We have developed a proof-of-concept low power free electron maser that is compact and low cost. The design, set-up and results of a novel (without wiggler) low power X-band rectangular waveguide pre-bunched free electron maser (PFEM) are presented in this paper. Our device operates at 10 GHz, with 10 mWatt seeding input power and employs two rectangular waveguide cavities (one for velocity modulation and the other for energy extraction). The electron beam used in this experiment is produced by Thoria coated Iridium filament which can operate at 3 kV and up to 5 mA beam current. The effect of the aperture on the power leaking out of the waveguide is also analyzed. The TE 10 mode propagation of the EM standing wave is used to pre-bunch the electron beams in the input cavity. The bunched electron beams are in the same phase as the TE 10 mode propagation of the EM wave in the output cavity. This free electron maser could be useful industrially, as it could be used with the commercially available accelerating voltage supplies.

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Section: Resultssupporting

confidence: 77%

The Experimental Results of a Low Power X-Band Free Electron Maser by Electron Pre-Bunching

Malek¹,

Lucas²,

Huang³

2010

PIER

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“…In stimulated emission, the radiated field will be much more intense that that due to spontaneous or coherent emission The stimulated emission is sometimes called the stimulated superradiant emission. The power emitted by the wiggling electron bunches is now proportional to the square of the beam current [3].…”

Section: Introductionmentioning

confidence: 99%

“…This radiation will become coherent if the electrons were tightly bunched together. The coherent radiation is sometimes called the superradiant emission [3].…”

Section: Introductionmentioning

confidence: 99%

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Prototype Design of Compact and Tuneable X-Band Pre-Bunched Free Electron Maser

Malek¹,

Lucas²,

Huang³

2008

PIER

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Abstract-At the University of Liverpool, we are developing prototype free electron maser (FEM) that are compact, powerful and efficient for potential industrial applications. The design, set-up and results of a novel X-band rectangular waveguide pre-bunched free electron maser (PFEM) are presented in this paper. Our initial device operates at 10 GHz and employs two rectangular waveguide cavities (one for velocity modulation and the other for energy extraction). The electron beam used in this experiment is produced by thermionic electron gun which operates at 3 kV and up to 50 µA. The nominal beam diameter is 1 mm passing across the X-band cavity resonators. The resonant cavity consists of a thin gap section of height 1.5 mm which reduces the beam energy required for beam wave interaction. The results, progress so far and the scope of work for the next couple of months are reported.

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“…This is because the electrons position in the beam are random, which results in random phases between the EM wave which they emit. The total radiated power is proportional to the number of electrons in the beam, i.e., the beam current, and is weak [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

The Engineering and Construction of a Pre-Bunched Free Electron Maser

Malek

Lucas²,

Huang³

2009

PIER

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Abstract-We are developing prototype free electron maser (FEM) that is compact, tuneable and efficient for potential industrial use. Therefore we define the characteristics for the construction of a novel X-band rectangular waveguide pre-bunched free electron maser (PFEM). Our device operates at 10 GHz and employs two rectangular waveguide cavities (one for velocity modulation and the other for energy extraction). The electron beam used in this experiment is produced by thermionic electron gun which can operate at 3 kV and up to 5 mA. The resonant cavity consists of a thin gap section of height 1.5 mm which reduces the beam energy required for beam wave interaction. The prototype design, engineering and construction process are reported in this paper.

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Superradiant and Stimulated Superradiant Emission in a Prebunched Beam Free-Electron Maser

Cited by 34 publications

References 16 publications

The Experimental Results of a Low Power X-Band Free Electron Maser by Electron Pre-Bunching

The Experimental Results of a Low Power X-Band Free Electron Maser by Electron Pre-Bunching

Prototype Design of Compact and Tuneable X-Band Pre-Bunched Free Electron Maser

The Engineering and Construction of a Pre-Bunched Free Electron Maser

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