ASRP 2025 - Alpic School for Radiation Physics

Session

Oral Session S20-2

S20-2

20 Jun 2025, 11:30

Yerevan

Conveners

Oral Session S20-2

• Lucia Giuliano

100. Investigating Double-Slit Dynamical X-ray Diffraction in Silicon Crystals

Vardan Margaryan (Institute of Applied Problems of Physics NAS RA)

20/06/2025, 11:30

An experimental investigation of double-slit dynamic X-ray diffraction in silicon crystals demonstrates that Young’s interference fringes can be formed in the cross section of the reflected beam, depending on the distances between the monochromator and the slits, as well as between the slits themselves. The study reveals that the number of observable fringes is influenced by both the crystal...

99. X-ray Diffraction Study of Deformation Fields Induced by Temperature Gradient in Single Crystals

Tigran Dovlatyan

20/06/2025, 11:50

As is known, the correct choice of the deviation function is very important in order to obtain a certain intensity, spectral and spatial distribution in the diffracted beams formed as a result of X-ray diffraction in deformed crystals. To describe the deviation function, it is sufficient to provide the dependence of the bending radius and interplanar distances of the reflecting atomic planes...

53. Spatial Resolution Optimization of Sensor Arrangement Around a Monolithic Scintillator

Nikita Alekseev (National Research Tomsk Polytechnic University)

20/06/2025, 12:10

Preclinical positron emission tomography (PET) requires high spatial resolution of the detector. A monolithic scintillator detector block is one of the promising approaches due to its ability to estimate the depth of interaction (DOI) and improve resolution through processing multiple channels and analyzing light distribution. The typical construction of such a block is a matrix of silicon...

63. High Resistive Radiation Detectors Based on Optoelectronic Transimpedance Convertor with MOS Photovaricap.

Babken Semerjyan (Yerevan State University, Institute of Physics)

20/06/2025, 12:30

Semiconductor nuclear radiation detectors are mostly high-resistance. In order to use very high-resistance detectors, we propose an interface for working with them. We propose a metal-oxide-semiconductor (MOS) structure as a signal-modulating device. The modulation of the MOS capacitance occurs by modulating illumination through an optically translucent metal contact.

91. Digital Processing of Electron Beam Images for Glass Plate Irradiation

Vitali Khachatryan

20/06/2025, 12:50

In recent years, material irradiation processing experiments have gained significant interest due to their vital role in various fields such as life sciences, material science, and electronics. Accurate and efficient determination of absorbed dose distribution is crucial for optimizing these processes. This study investigates the combination of glass plate irradiation and digital processing of...