Toward precision mass measurements of neutron-rich nuclei relevant to rr-process nucleosynthesis

The open question of where, when, and how the heavy elements beyond iron enrich our Universe has triggered a new era in nuclear physics studies.\ Of all the relevant nuclear physics inputs, the mass of very neutron-rich nuclides is a key quantity for revealing the origin of heavy elements beyond iron.\ Although the precise determination of this property is a great challenge, enormous progress has been made in recent decades, and it has contributed significantly to both nuclear structure and astrophysical nucleosynthesis studies.\ In this review, we first survey our present knowledge of the nuclear mass surface, emphasizing the importance of nuclear mass precision in $r$-process calculations.\ We then discuss recent progress in various methods of nuclear mass measurement with a few selected examples.\ For each method, we focus on recent breakthroughs and discuss possible ways of improving the weighing of $r$-process nuclides.Comment: 10 figures, review articles in Frontiers of Physic

Conceptual design of elliptical cavities for intensity and position sensitive beam measurements in storage rings

Position sensitive beam monitors are indispensable for the beam diagnostics in storage rings. Apart from their applications in the measurements of beam parameters, they can be used in non-destructive in-ring decay studies of radioactive ion beams as well as enhancing precision in the isochronous mass measurement technique. In this work, we introduce a novel approach based on cavities with elliptical cross-section, in order to compensate for existing limitations in ion storage rings. The design is aimed primarily for future heavy ion storage rings of the FAIR project. The conceptual design is discussed together with simulation results.Comment: Added definition of Uv and Pdiss in the introduction section. Added Mode numbering in table 1 and figure 1 for more clarity. Corrected one wrong figure reference. Other minor typo correction

Beyond Wigner's isobaric multiplet mass equation: Effect of charge-symmetry-breaking interaction and Coulomb polarization

The quadratic form of the isobaric multiplet mass equation (IMME), which was originally suggested by Wigner and has been generally regarded as valid, is seriously questioned by recent high-precision nuclear mass measurements. The usual resolution to this problem is to add empirically the cubic and quartic $T_z$-terms to characterize the deviations from the IMME, but finding the origin of these terms remains an unsolved difficulty. Based on a strategy beyond the Wigner's first-order perturbation, we derive explicitly the cubic and quartic $T_z$-terms. These terms are shown to be generated by the effective charge-symmetry breaking and charge-independent breaking interactions in nuclear medium combined with the Coulomb polarization effect. Calculations for the $sd$- and lower $fp$-shells explore a systematical emergence of the cubic $T_z$-term, suggesting a general deviation from the original IMME. Intriguingly, the magnitude of the deviation exhibits an oscillation-like behavior with mass number, modulated by the shell effect.Comment: 13 pages, 4 figure

Application of the RMF mass model to the r-process and the influence of mass uncertainties

A new mass table calculated by the relativistic mean field approach with the state-dependent BCS method for the pairing correlation is applied for the first time to study r-process nucleosynthesis. The solar r-process abundance is well reproduced within a waiting-point approximation approach. Using an exponential fitting procedure to find the required astrophysical conditions, the influence of mass uncertainty is investigated. R-process calculations using the FRDM, ETFSI-Q and HFB-13 mass tables have been used for that purpose. It is found that the nuclear physical uncertainty can significantly influence the deduced astrophysical conditions for the r-process site. In addition, the influence of the shell closure and shape transition have been examined in detail in the r-process simulations.Comment: to be published in Phys. Rev. C, 22 pages, 9 figure

Conceptual principles of effective labor motivation as a premise of competitive functioning of agricultural enterprises

Purpose – Labor motivation plays a significant role in the successful development of an agricultural enterprise, because only creative workers who display initiative will be able to make the business entity effective and competitive in the market environment. Research method – This caused the need to conduct an in-depth study of theoretical and methodological foundations of intensification of labor motivation of employees in agricultural enterprises as prerequisites for their competitive functioning. In the course of researching this issue, the authors of the article proposed a methodological approach, which envisages determining the productivity of labor based on the indicator of gross output at the prices of the current year. Results – As a result, it was determined that the index of productivity in agricultural enterprises of the researched region is significantly higher than the similar figure of 2010 which was determined by the constant prices. At the same time, the correlation between the productivity growth rate and the wage in the period from 2016 to 2018 was respectively 1.031 – 1.269. Implications /originality /value – The article and methodical provisions on the balanced scorecard according to the balanced scorecard concept (BSC) are further developed, which enables an in-depth analysis of the impact of certain aspects of business entities on such indicators as productivity and production efficiency, level of competitiveness, etc.Oleksandr Yu. Yermakov: [email protected]; [email protected] I. Litvinov: [email protected] Yu. Yermakov - National University of Life and Environmental Sciences of UkraineVitaliy I. Litvinov - National University of Bioresources and Natural Resources of Ukraine Berezhany Agricultural InstituteAndriychuk V.G., 2013, Economy of enterprises of Agroindustrial complex: textbook, KNEU, Kyiv.Cheban A.A., 2015, An effective system of motivation of work as an element of increasing enterprise competitiveness, “Young scientist”, no. 11(26), pp. 104-108.Diyesperov V.S., 2012, Payment of agricultural labor, “Economika APK”, no. 9, pp. 76-83.Dyachenko N.K., Lapa V.O., 2016, Influence of motivational factors on productivity increase in agricultural enterprise, “Agrosvit”, no. 5, pp. 37-43.Hryshchenko V.F., Chernova M.S., 2011, Innovative approaches to improvement of the system of motivation of personnel of small enterprises of Ukraine in the modern conditions of economic activity, “Marketing and Management of Innovations”, vol. 2(1), pp. 103-112.Israilov Sh.Sh., 2013, Improving motivation to work as a condition of the effective operation of the enterprise, Autorefat, Moscow.Kosheliupov І.F., Kravchenko V.O., 2008, Socio-economic model of the mechanism of motivation of work of the managers of enterprises, ODEU, Odessa.Kramarenko, V.I., Kholoda, B.I., 2003, Upravlinnia personalom firmy. Personnel management of the firm, tutorial, TsUL, Kyiv.Niven P.R., 2004, Sbalitsivannaja a system of pozamateley: Shah for shag – maksimalnoe povyšenie efetivnosti and zakreplenie poluchennyh results, Balance Business Buchs, Dnepropetrovsk.Shevchuk V.R., 2009, Strategic management accounting: teach, Alerta, Kyiv.Shilnikova Z.N., 2015, Motivation of personnel as a complex effective functioning of domestic enterprises in modern business enterprises, “Scientific Issue of Kherson State University”, vol. 2(10), pp. 114-117.Statistical bulletin Number of employees, their working hours and remuneration 2016, 2017, Accountable for issue V.I. Savchuk, U.V. Kuzyshyn, Main statistical office in Ternopil region, Ternopil.Statistical bulletin Number of employees, their working hours and remuneration 2017, 2018, Accountable for issue O.V. Streltsova, T.P. Tkachuk, Main statistical office in Ternopil region, Ternopil.Statistical bulletin Number of employees, their working hours and remuneration 2018, 2019, Accountable for issue O.V. Streltsova, U.V. Kuzyshyn, Main statistical office in Ternopil region, Ternopil.Statistical yearbook Agriculture of Ukraine 2016, 2017, Accountable for issue O.M. Prokopenko, State Statistics Service of Ukraine, Kyiv.Statistical yearbook Agriculture of Ukraine 2017, 2018, Accountable for issue O.M. Prokopenko, State Statistics Service of Ukraine, Kyiv.Statistical yearbook Agriculture of Ukraine 2018, 2019, Accountable for issue O.M. Prokopenko, State Statistics Service of Ukraine, Kyiv.Vantukh V., 2008, Motivation mechanism of entrepreneurship of APK in market economy. Visnyk of Lviv University, “Economics”, iss. 40, pp. 56-60.Yermakov О.Yu., Lychuk L.I., 2018, Formation and use of labor potential of agricultural enterprises, KOMPRINT, Kyiv.Zakharchin G.M., Lubomudrova N.P., 2011, Conceptual approaches to formation of motivational policy of personnel in modern conditions, “Bulletin of Lviv Polytechnic National University”, no. 698, pp. 163-169.2(100)9310

Toward CP-even Neutrino Beam

The best method of measuring CP violating effect in neutrino oscillation experiments is to construct and use a neutrino beam made of an ideal mixture of $\bar{\nu}_e$ and $\nu_e$ of monochromatic lines. The conceptual design of such a beam is described, together with how to measure the CP-odd quantity. We propose to exploit an accelerated unstable hydrogen-like heavy ion in a storage ring, whose decay has both electron capture and bound beta decay with a comparable fraction.Comment: 6 pages, 2 figures, Published versio