Erhan Eser

Ankara Hacı Bayram Veli University | AHBV · Physics

Electroporation (EP) is the process of increasing the permeability of a biological cell or tissue by applying a short-term and sufficient external electric field. The utilization of proper pulse settings is required for EP-based treatments to be successful. Our aim in this study is to examine the effect of different electrical pulse widths and stre...

An analytical formulation that calculates the thermodynamic properties of zirconium carbide and zirconium nitride has been produced using the n-dimensional Debye function. The results of the heat capacity and entropy calculated here for ZrM (M=N and C) were compared with the literature data, and are found to be in agreement. This agreement shows th...

The layered perovskite compounds, which show multiferroic properties, have attracted interest due to their interesting magnetic and electronic properties. In this study, we have investigated the heat capacity of EsBaCuFeO5 (Es = Ho, Gd and Yb) as a function of the temperature by using the overall equation of fitting. The Debye temperature, Einstein...

Thermodynamic properties of various crystalline solids are evaluated from low-temperature heat capacity measurements, in the temperature range 0–300 K using semi-empirical models. Previous studies include fit functions with many coefficients resulting in almost perfect agreement with experimental data. The heat capacities of the end-members of the...

In this study, we have proposed an analytical method for calculating the specific heat capacity of uranium nitride nuclear material. The specific heat capacity results have obtained by the use of the Debye-Einstein approximation. The thermal conductivity of nuclear material has been obtained by using the experimental data of thermal diffusivity and...

The specific heat capacity of half-Heusler ScNiSb and TmNiSb compounds have been calculated using a simple approximation in the temperature range 0–298 K. The results obtained for the specific heat capacities are in good agreement with the experimental data in the literature. The Debye temperatures were derived by fitting the analytical expression...

Knowledge on fuel enthalpy and its temperature derivative, the heat capacity, are important quantities in determination of fuel behavior in normal reactor operation and reactor transients. The aim of this study is to compare the heat capacity of oxide and nitrite fuels by using Einstein-Debye approximation. A simple analytical expression was perfor...

A lot of problems of atomic and nuclear physics depend on Coulomb potential with high accuracy. Therefore, it is very important to carefully and accurately calculate the Coulomb potential. In this study, a new analytical expression was obtained for calculating the Coulomb potential by choosing the Fermi distribution function, which is suitable for...

In this work, we have investigated the linewidth and shift of R1 line of Y3Al5O12: Cr3+ by using a simple approach in the temperature range of 0–300K. The results showed a good agreement with the results in the literature. The Debye temperature derived by fit the obtained analytical expression to experimental values in literature. The obtained Debye...

A new analytical formula for the Arrhenius integral has been proposed by using incomplete gamma functions, which is simple, accurate and reliable. The proposed formula has compared with several published the Arrhenius integral approaches, and is in agreement with the other approaches. Compared with the other approximate formulas proposed in the lit...

A lot of problems of atomic and nuclear physics depend on with high accuracy to the Coulomb potential. Therefore, it is very important to carefully and accurately calculate the Coulomb potential. In this study, a new analytical expression was obtained for calculating the Coulomb potential by choosing the Fermi distribution function, which is suitab...

The electronic structure, magnetic and elastic properties of Ir2MnSi full-Heusler compound is studied within the framework of Density Functional Theory (DFT). The ferromagnetic (FM) and non-magnetic (NM) states are compared in Cu2MnAl and Hg2CuTi prototype structures. The ferromagnetic state in Cu2MnAl structure has been found energetically more st...

Background: Multiple beams are generally used with an increased possibility that the beam axis intersects the treatment table. Treatment tabletops are commonly made of carbon fiber due to its high mechanical strength and rigidity, low specific density, extremely light and low radiation beam attenuation properties. Purpose of this paper is investiga...

In this study, the environmental radioactivity measurements for Tokat and Sivas provinces in the northeast of Turkey were performed. Using gamma ray spectrometry, the activity concentrations of natural radionuclides in soil and travertine samples (²³²Th, ²²⁶Ra, and ⁴⁰K) were determined. The annual effective dose equivalent, the absorbed doses rate...

In this study, it is presented a new analytical method to the calculation of thermophysical properties of some solids important in hydrogen production relevant to the Cu–Cl cycle (Cu, CuO, CuCl). In this way we have used the solution of Debye functions is valid for the all temperature regions with aid of statistical thermodynamics. The analytical r...

In this paper, we present a new analytical method to evaluate the temperature dependence of the thermal line shift and thermal line width of spectral lines in the Raman process using a simple approximation for the Debye functions. The proposed formulae guarantee the accurate and fast calculation of the thermal line shift and thermal line width. As...

Knowledge of the Franck–Condon factors (FCFs) and related quantities is essential to understand and to estimate many important aspects of the astrophysical molecules, such as kinetics of the energy transfer, radiative lifetimes, band intensity, and vibrational temperatures. In this view, we propose a new analytical formula of the Franck–Condon inte...

In this study, we calculated the electrical resistivity and heat capacities of some ideal metals (Cu, Pt, and Pd) using a method that it employs the statistical model and Debye functions. The method is used to provide a simple and reliable analytical procedure for wide temperature range. The results obtained for the electrical resistivity and heat...

The aim of this paper is to provide a simple and reliable analytical expression for the thermodynamic properties calculated in terms of the Debye model using the binomial coefficient, and examine specific heat capacity of CdTe in the 300–1400 K temperature range. The obtained results have been compared with the corresponding experimental and theore...

The evaluation of thermal properties of actinide oxide fuels is a problem of high importance for the development of new generation reactors. In the present study, an expression obtained for n-dimensional Debye functions is used to derive a simple analytical expression for the specific heat capacity of nuclear fuels. To test the validity and reliabi...

In this study, the neutron and proton density distributions of 208Pb nucleus have been analytically calculated by using a new, simple and physically meaningful analytical expression obtained for the Fermi integral which is situated in the nucleon density distributions. The results obtained for 208Pb have been compared with those of the other theore...

In the present study, a novel method is proposed to accurately calculate the thermal expansivity of semiconductors using the analytical expression obtained for the integer and non-integer n-dimensional Debye functions. The proposed approach is novel as it uses the non-integer n-dimensional Debye functions for the accurate calculations of the therma...

In the present study, a simple and efficient expression for the accurate and quick calculation of the specific heat capacity of semiconductor compounds is presented on the basis of n-dimensional Debye functions using binomial coefficients. As will be seen, the present formulation yields compact, closed-form expressions which enable the straightforw...

In the present study, the heat capacities of the nuclear fuels were computed using the series expansion relation for integer and non-integer n-dimensional Debye functions involving binomial coefficients and incomplete gamma functions. The proposed approach is novel as it uses the non-integer n-dimensional Debye functions for accurate calculations o...

In this study, the nuclear level density parameters of some deformed radioisotopes of target nuclei (W, Hg) used on the accelerator-driven subcritical systems (ADS) have been calculated taking into consideration different collective excitation modes of observed nuclear spectra near the neutron binding energy. The method used in the present work ass...

In this study we have investigated the symmetry properties and R4/2 energy ratio of energy bands for superdeformed light even–even nuclei from Z = 10 to 30 by the use of a simple and valid analytical relation obtained in terms of a K-quantum number, which is the projection of the total angular momentum on the axis of symmetry of a nucleus. Moreover...

The objective of this work was to obtain a simpler and more accurate analytical expression to determine the Debye–Waller factor of crystals using an n-dimensional Debye approximation involving binomial coefficients and incomplete gamma functions. The results obtained were compared with the corresponding experimental and theoretical results and, the...

Using binomial coefficients, new, simple, and efficient algorithms are presented for the accurate and fast calculation of the heat capacity of solids depending on the Debye temperature. As will be seen, the present formulation yields compact, closed-form expressions which enable the straightforward calculation of the heat capacity of solids for arb...

Nükleer seviye yoğunluğu bilgisi, reaktör fiziğinde istatistiksel hesaplamaların yapılmasında, astrofizikte ve ağır iyon çarpışmalarının incelenmesinde önemli bir rol oynar. Nükleer enerji seviye yoğunluğu hem parçacığın anlaşılması hem de çeşitli reaksiyonlarda gamma ışını yayınlanması için önemli bir fiziksel niceliktir. Seviye yoğunluk parametre...

Nuclear level density plays an important role in estimation of nuclear reaction rates, statistical calculations of astrophysics, spallations neutrons measurements, and studies of intermediate-energy heavyion collisions. In particular, level densities have been used successfully in calculation of the neutroncapture cross-section basic data required...

The nuclear energy level density based on nuclear collective excitation mechanism has been identified in terms of the low-lying collective level bands at excitations near the neutron binding energy. The nuclear level density parameters of some deformed light nuclei in the region of mass number 40<A<80 have been calculated taking into consideration...

In this study, the level density parameters of deformed heavy Hf isotopic ( 176Hf, 177Hf, 178 Hf, 179Hf, 180Hf, 181Hf ) nuclei are calculated using energy spectrum of the nuclei in interest, and the detailed band analysis have been made. The parameters are determined by taking into account collective structure for different bands of each isotope. T...