Detection of X-Ray Transition Radiation by Means of a Spark Chamber

Alikhanian, A.I.; Avakina, K. M.; Garibian, G.M.; Lorikian, M.P.; Shikhliarov, K.K.

doi:10.1103/physrevlett.25.635

Cited by 56 publications

(3 citation statements)

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“…Various radiator-detector configurations 1 " 8 have led to results which are in fair agreement with the theoretical predictions 9 " 11 (including the expected saturation of the yield at high particle energies). However, a precise measurement of the frequency spectrum of this radiation is a much more significant test of the theory, and, furthermore, leads to details crucial for the design of transition-radiation detectors for relativistic particles.…”

supporting

confidence: 79%

Measurements of the Frequency Spectrum of Transition Radiation

Cherry

Mueller

1977

Phys. Rev. Lett.

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We report a measurement of the frequency spectrum of x-ray transition radiation. X rays were generated by electrons of 5 and 9 GeV in radiators of multiple polypropylene foils, and detected in the range 4 to 30 keV with a calibrated single-crystal Bragg spectrometer. The experimental results closely reproduce the features of the theoretically predicted spectrum. In particular, the pronounced interference pattern of multifoil radiators and the expected hardening of the radiation with increasing foil thickness are clearly observed. The overall intensity of the radiation is somewhat lower than predicted by calculations.

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supporting

confidence: 79%

Measurements of the Frequency Spectrum of Transition Radiation

Cherry

Mueller

1977

Phys. Rev. Lett.

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“…Since the mean ionization potential is approximately proportional to the atomic number Z and o)p 2 ~ Z, the above estimations of z z depends weakly on Z. The lack of the density effect in the energy loss of relativistic electrons has previously been demonstrated experimentally for very thin targets (10 -4 --1 0 -6 c m ) in [24]. A decrease of the ionization energy loss in a gas proportional counter was reported in [251 and an attempt was made to explain this phenomenon by the transition effects on the counter walls.…”

Section: =A2/(dwf/dz)~-035 For the Dense Medium-gasmentioning

confidence: 93%

Anomalous density effect near the interface between two media

Chechin

Ermilova

1989

Z Phys D - Atoms, Molecules and Clusters

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A theoretical investigation is presented for the local energy loss of a relativistic charged particle and the K-shell excitation cross section aK when the particle crosses a sharp interface between two different media. The logarithmic increase of the local energy loss and o-K with the particle energy is shown to differ essentially from the case of a homogeneous medium. The calculations of e~ for aluminum and copper foils are in good agreement with the experimental data.

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“…Результатом этих опытов явился наиболее прямой метод определения электромагнитных радиусов протона и дейтронов, а также их формфакторы. Проводились исследования свойств рентгеновского переходного излучения, излучений узкоколлимированных пучков релятивистских электронов, каналированных в кристаллах [2][3][4]. С использованием синхротронного излучения велись исследования в области кристаллофизики, радиационной биофизики, радиационного материаловедения.…”

Section: Introductionunclassified