Object

Title: X-Ray Crystalline Undulator Radiation in Water Window

Ստեղծողը:

Gevorgyan, H.

Տեսակ:

Հոդված

Հրապարակման մանրամասներ:

Established in 2008

Ամսագրի կամ հրապարակման վերնագիր:

Armenian Journal of Physics=Ֆիզիկայի հայկական հանդես

Հրապարակման ամսաթիվ:

2021

Հատոր:

14

Համար:

2

ISSN:

1829-1171

Պաշտոնական URL:


Համատեղ հեղինակները:

A. I. Alikhanyan National Scientific Laboratory, Yerevan, Armenia

Ծածկույթ:

105-109

Ամփոփում:

The problem of radiation produced by the bunch of relativistic positrons, channeled into the crystalline undulator, is considered, taking into account the polarization of a crystal medium. If a bunch energy is above the threshold energy, then the radiation is generated in the limited frequency range, due to the medium polarization. Both soft and hard boundary photons are emitted at a zero angle. When the ratio of the bunch energy to the threshold energy approaches unity from above, the peak of the bunch radiation spectrum is near the resonant frequency and can fall into the soft X-ray frequency range due a certain choice of the parameters of the crystalline undulator. In that case, it is necessary to use a low energy relativistic bunch. Method is effective because a fairly dense beam of soft X-ray photons is generated. It is shown the possibility of obtaining monochromatic, intense, directed photon beams in the water window region, important for medical and biological applications.

Ձևաչափ:

pdf

Նույնացուցիչ:

click here to follow the link ; oai:arar.sci.am:272112

Բնօրինակի գտնվելու վայրը:

ՀՀ ԳԱԱ Հիմնարար գիտական գրադարան

Object collections:

Last modified:

Dec 13, 2023

In our library since:

Jul 2, 2021

Number of object content hits:

144

All available object's versions:

https://arar.sci.am/publication/296623

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