Pyroelectric deflector of charged particle beam

Abstract

A new type deflector of a charged particle beam based on pyroelectric crystals is proposed and demonstrated experimentally. The transverse electric field arises in the gap between two pyroelectric crystals in vacuum because of the pyroelectric effect appearing when a temperature gradient is applied to both crystals. In a proof-of-principle experiment, we demonstrated deflection of a low-energy electron beam. The application of pyroelectric deflectors as bending elements in the pyroelectric undulator for production of the undulator radiation is proposed.

Pyroelectric deflector of relativistic electron beam

“…Theoretical estimation of the electric field strength in the deflector can be performed using pyroelectric properties of the crystals using Eq. (4.2) from Ref [8]. This estimation at conditions described in the present paper gives strength 211 kV cm at the variation of the temperature of crystals by 38.8 • C. The calculated strength exceeds experimentally observed one in more than two times.…”

“…Eq. ( 5) has been used in the analysis of the deflection of the non-relativistic electron beam in [8]. In the ultra-relativistic case at ε kin >> mc 2 , Eq.…”

“…Besides, steering of the low energy beam is possible due to surface charge, which is produced on dielectrics by incident beam [5][6][7]. Recently, the pyroelectric deflector of charged particles beam has been proposed in Ref [8]., where the deflection of the non-relativistic electron beam was demonstrated experimentally. Here we describe our first experiments on the deflection of the relativistic electron beam by the pyroelectric deflector and discuss the possibility for application of pyroelectric deflectors in the pyroelectric undulator.…”

Свойства Керамического Пироэлектрического Генератора Рентгеновского Излучения В Зависимости От Давления Остаточного Газа

“…По-видимому, сферический или ци-линдрический генератор может обеспечить более высокую энергию и ток ускоренных электронов, а также повышенный выход рентгеновского излучения. Возможно также применение пироэлектрической керамики в недавно предложенном пироэлектрическом ондуляторе [6] и дефлек-торе пучка заряженных частиц [6,7].…”

Properties of a Ceramic Pyroelectric X-Ray Generator as Dependent on Residual-Gas Pressure

“…In particular, spherical or cylindrical layers of radially polarized ceramics can be used for creating spherical and cylindrical generators, which can probably provide higher energies and currents of accelerated electrons and increased yield of X-ray photons. Pyroelectric ceramics can also be used in the recently proposed pyroelectric undulator [6] and deflector of charged-particle beams [6,7]. Fig.…”