On the Crystal and Magnetic Behavior of ScFe4Al8 Single Crystal

Nuclear and magnetic properties of the ScFe4Al8 single crystal were found to exhibit unparalleled complexity of nuclear and magnetic structures. Our previous neutron measurements revealed presence of two modulation vectors, both along [", ", 0], however with dfferent critical temperatures. Recent experiments forced us to revise our knowledge of the structural ordering in the sample. So far, the crystal structure of this alloy, being of ThMn12-type, has never been questioned

Fermiology via the electron momentum distribution

Investigations of the Fermi surface via the electron momentum distribution reconstructed from either angular correlation of annihilation radiation (or Compton scattering) experimental spectra are presented. The basis of these experiments and mathematical methods applied in reconstructing three-dimensional densities from line (or plane) projections measured in these experiments are described. The review of papers where such techniques have been applied to study the Fermi surface of metallic materials with showing their main results is also done.Comment: 22 pages, 9 Figures, 4 Table

Measurement and comparison of individual external doses of high-school students living in Japan, France, Poland and Belarus -- the "D-shuttle" project --

Twelve high schools in Japan (of which six are in Fukushima Prefecture), four in France, eight in Poland and two in Belarus cooperated in the measurement and comparison of individual external doses in 2014. In total 216 high-school students and teachers participated in the study. Each participant wore an electronic personal dosimeter "D-shuttle" for two weeks, and kept a journal of his/her whereabouts and activities. The distributions of annual external doses estimated for each region overlap with each other, demonstrating that the personal external individual doses in locations where residence is currently allowed in Fukushima Prefecture and in Belarus are well within the range of estimated annual doses due to the background radiation level of other regions/countries

Fifth European Dirofilaria and Angiostrongylus Days (FiEDAD) 2016

Peer reviewe

Neutron and X-Ray Scattering in the Studies of Metals

Neutrons and X-rays are well established tools for studying properties of condensed matter. With the advent of synchrotron radiation facilities their high photon fluxes started to be effectively used in the fields reserved earlier for neutrons. Although the two techniques are conceptually so similar that many physical problems can be solved using either technique, there are apparent fields in which one method is superior with respect to the other one. Therefore both techniques are often needed for characterization of the material of interest. The paper concentrates on the studies of some static properties of metals and alloys. Relatively wide range of phenomena is presented, starting from structural aspects and ending on the sophisticated studies of the magnetic moment components. The paper is intended to bring a short (yet necessarily subjective and incomplete) review of what has recently been achieved by using neutrons and X-rays in metal (or more precisely - metallic states) studies

The cancer risk among workers of the nuclear centre at Świerk, Poland

Dosimetric information concerning 4606 workers at the nuclear centre at Świerk (Poland) from 1956 to 2001 and medical records of 575 workers are reviewed. The average cumulative doses per person were 34 mSv (effective dose) and 18 mSv (equivalent dose to hands). The calculated odds ratio of cancers, OR = 0.90 (0.62–1.18; 68% CI), shows a statistically insignificant decrease of the cancer risk among the irradiated workers. No cancer cases were detected neither among 52 people exposed to the highest cumulative doses (from 35 to 653 mSv) nor among 43 workers who had been chronically irradiated for a long time (from 13 to 26 years)

Promieniowanie naturalne w Polsce a śmiertelność nowotworowa

W niniejszym artykule przeanalizowano częstości występowania śmiertelności nowotworowej w obszarach o wyższym i niższym naturalnym tle promieniowania w Polsce. Porównanie statystyki dla obszarów od największych (grupy województw) po najmniejsze (pojedyncze powiaty), pokazało ujemną korelację i nieznaczny spadek umieralności wraz ze wzrostem dawki, średnio o -1,17%/mSv/rok (p = 0,02) dla wszystkich nowotworów, oraz -0,82%/mSv/rok (p = 0,2) dla samych nowotworów płuc. Niniejsza praca przedstawia główne tezy oryginalnego raportu opublikowanego w 2012 r. w czasopiśmie Dose-Response [1]

Electronic Structure and Ordering Degree in Fe3AlFe_3Al Alloy Doped with Transition Metals. Ab Initio Study

$Fe_3Al$ alloy crystallizes in $DO_3$-type structure. In the perfectly ordered alloy there are two nonequivalent sublattices (A,C) and B, which are occupied by Fe atoms, whereas all D sites are taken by metalloid. Such perfect ordering is, however, difficult to achieve experimentally, and some disorder between B-D as well as (A,C)-D sublattices typically appears in real samples. This disorder modifies strongly electronic structure and magnetic properties. The aim of this contribution is to investigate total energy dependence of atomic exchange of sites between B-D and (A,C)-D positions in $Fe_3Al$ as well as in alloys doped with transition metals using ab-initio technique. Furthermore, dependence of electronic and magnetic properties of $Fe_3Al$-based alloys on the crystallographic ordering is thoroughly investigated