Conveners
Synchrotron and neutron radiation sources and their use in scientific and applied fields
- A Shemukhin (Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Russia)
Synchrotron and neutron radiation sources and their use in scientific and applied fields
- A Shemukhin (Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Russia)
A W-Be-photoneutron neutron source IN-LUE based on a linear electron accelerator was created and installed at the Institute for Nuclear Research of RAS [1]. The shape of the neutron spectrum and flux estimation was obtained earlier as a result of simulation [2]. Due to the impossibility of measuring the neutron spectrum in a wide range of energies within the source, various methods of spectrum...
For more than 40 years synchrotron-based x-ray sources as well as free-electron lasers based on linear accelerators have been widely used in materials science, spectroscopy, crystallography, research of fast processes, medicine, molecular biology and biochemistry, medicine, and other applied and scientific tasks. Nowadays state-of-art technologies make it possible to design and develop...
When an atom is irradiated by intense electromagnetic field, the first photoionization act initiates the variety of competitive processes, such as sequential ionization, Auger decay, radiation decay and other [1]. As a result, the sample evolves and its evolution depends on radiation parameters: intensity, pulse duration and polarization. The last is often left behind the scenes, in...
Double core hole (DCH) states could be created in two different mechanisms. The first is core subshell electron capture by the nucleus and subsequent shake-process of an electron from the same subshell either to the high unoccupied state (shake-up) or to the continuum (shake-off) mostly due to instant changing of the nucleus charge by unity. Another way is photoionization, when one electron is...
The recent discovery of magnetic ordering in van der Waals (vdW) materials down to the monolayer limit has opened a new direction in the field of two-dimensional materials, allowing researchers to explore magnetism in lower dimensions in simple crystal systems. The advent of long-range 2D ferromagnetism brings about new transport phenomena in two dimensions, like tunneling magnetoresistance...
Distributions of intermediate and slow neutron flux from the output collimated channel of the photoneutron source are measured. A cadmium filter is used to suppress slow neutrons in the measurement of intermediate neutrons. A standard helium counter moved during measurements and the two-coordinate neutron detector based on a thin $^{10}B$ layer combined with a proportional chamber are used...
The study of cultural heritage by state-of-the-art scientific methods is an important interdisciplinary field. Of interest are archaeological finds made of metal [1, 2]. Such artifacts store valuable information about the technological, economic and social level of ancient states. Corrosion processes occurring in metals also require careful study, because it improves restoration and...
One of the major problems of nuclear energy is long-term nuclear waste reprocessing and storage. Current technologies are able to partially regenerate nuclear fuel but lead to the accumulation of long-living high-level nuclear waste (HLW). Reducing nuclear waste levels requires the effective and selective separation of minor actinides from HLW possessing high content of lanthanides.
Recently...
A compact accelerator-based neutron source VITA has been proposed and created at the Budker Institute of Nuclear Physics in Novosibirsk, Russia. The source comprises an original design tandem accelerator, solid lithium target, and a neutron beam shaping assembly. At present, the facility provides the production of protons or deuterons, the formation of neutron fluxes of almost any energy...
