Yazar "Gumus, Hasan" için listeleme
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Activity concentration of terrestrial and anthropogenic radionuclides (Ra-226, Rn-222, Th-232, K-40, and Cs-137) in soil samples
Altikulac, Aydan; Turhan, Seref; Gumus, Hasan (Springer, 2016)Measurement of the activity concentrations of terrestrial and anthropogenic radionuclides in one hundred fifteen soil samples collected from various locations in Samsun city was taken using a gamma-ray spectrometer with a ... -
Calculation of stopping power and range for heavy ions at intermediate energies by using Tietz screening function
Gumus, Hasan (Elsevier, 2019)In this study, a stopping power formula and range calculation procedure for incoming heavy ions were presented. For this purpose, simple analytical expressions are obtained for effective atomic number in the modified ... -
Calculation of the electronic stopping cross-sections of compounds for low energy protons by using molecular orbitals
Tufan, Mustafa Cagatay; Gumus, Hasan; Kabadayi, Onder (Elsevier Science Bv, 2007)The modified Firsov model has been applied to the calculation of the electronic stopping cross-section of compounds for low energy protons by using molecular orbitals. We used the Symmetry Adapted Linear Combination of ... -
Calculation of the stopping power for intermediate energy positrons
Gumus, Hasan; Kabaday, Onder; Tufan, M. Cagatay (Physical Soc Republic China, 2006)In this study, a new algorithm is presented for the stopping power calculation in the case of incoming positrons. The Rohrlich and Carlson stopping power formula is modified for intermediate energy positrons. The Lenz-Jensen ... -
CSDA range, stopping power and mean penetration depth energy relationships in some hydrocarbons and biologic materials for 10 eV to 100 MeV with the modified Rohrlich-Carlson model
Gumus, Hasan; Bentabet, Abdelouahab (Springer Heidelberg, 2017)In this study, for some hydrocarbons and biological compounds, stopping power formula are presented, being valid for low and intermediate electron energies. In addition, calculation of the continuous slowing down approximation ... -
Measurement of the terrestrial and anthropogenic radionuclide concentrations in Bafra Kizilirmak delta (bird sanctuary) in Turkey
Mutuk, Halil; Gumus, Hasan; Turhan, Seref (Oxford Univ Press, 2014)In this study, the activity concentrations of terrestrial and anthropogenic radionuclides in the soil samples collected from Bafra Kizilirmak Delta were measured by using gamma spectrometry with an NaI(Tl) detector. The ... -
Natural activity concentrations in bottled drinking water and consequent doses
Kabadayi, Onder; Gumus, Hasan (Oxford Univ Press, 2012)The radioactivity concentrations of nuclides U-238, Th-232 and K-40 in bottled drinking water from six different manufacturers from Turkey were measured using high-resolution gamma-ray spectrometry. The measurement was ... -
The natural and artificial radionuclides in drinking water samples and consequent population doses
Altikulac, Aydan; Turhan, Seref; Gumus, Hasan (Elsevier Science Bv, 2015)Concentration levels of Ra-226, Ra-228, K-40 and Cs-137 were determined in 52 drinking water samples collected from the different supplies in Samsun province to evaluate annual effective dose due to the ingestion of the ... -
Neuroprotective effects of melatonin and omega-3 on hippocampal cells prenatally exposed to 900 MHz electromagnetic fields
Koc, Guluna Erdem; Kaplan, Süleyman; Altun, Gamze; Gumus, Hasan; Deniz, Omur Gulsum; Aydin, Isinsu; Altunkaynak, Zuhal (Taylor & Francis Ltd, 2016)Purpose: Adverse effects on human health caused by electromagnetic fields (EMF) associated with the use of mobile phones, particularly among young people, are increasing all the time. The potential deleterious effects of ... -
New stopping power formula for intermediate energy electrons
Gumus, Hasan (Pergamon-Elsevier Science Ltd, 2008)This study presents a new stopping power (SP) formula for electrons. In the modified Bethe-Bloch SP expression, analytical expressions for the effective charge and effective mean excitation energies (EMEE) of target atoms ... -
Practical calculations of stopping powers for intermediate energy electrons in some elemental solids
Gumus, Hasan; Kabadayi, Onder (Pergamon-Elsevier Science Ltd, 2010)This study presents calculation results of the stopping power (SP) of electrons of kinetic energy from 10 eV to 100 key for some elemental solids. The method is based on utilization of the modified Bethe-Bloch SP expression ... -
Radioactivity levels and health risks due to radionuclides in the soil and sediment of mid-Black Sea: Kizilirmak Deltas-Turkey
Ariman, Sema; Gumus, Hasan (Walter De Gruyter Gmbh, 2018)Artificial and natural radionuclide pollutants of the marine environment have been recognized as a serious environmental concern. In this study, the activity concentrations of terrestrial and anthropogenic radionuclides ... -
Stopping power and CSDA range calculations for incident electrons and positrons in breast and brain tissues
Tufan, Mustafa Cagatay; Namdar, Tuba; Gumus, Hasan (Springer, 2013)The stopping power in some biological compounds for electrons and positrons was calculated over the energy range from 100 eV to 1 GeV. Total stopping power was obtained by summing the electronic (collisional) and radiative ... -
A study on the calculation of stopping power and CSDA Range for incident positrons
Tufan, Mustafa Cagatay; Gumus, Hasan (Elsevier, 2011)In this work, we have given a new method to calculate stopping power for incident positrons in a number of different targets. Our method are based on the Gumus's method for incident electrons. We have calculated the ... -
SVZ Sum Rules in Quantum Mechanics
Mutuk, Halil; Gumus, Hasan (Iop Publishing Ltd, 2016)In this work we obtained ground state energy level of well known harmonic oscillator in quantum mechanics by using SVZ sum rules. We calculated energy eigenvalues with and without an external electric field. -
X(3872) and its heavy quark spin symmetry partners in QCD sum rules
Mutuk, Halil; Sarac, Yasemin; Gumus, Hasan; Ozpineci, Altug (Springer, 2018)X(3872) presents many surprises after its discovery more than ten years ago. Understanding its properties is crucial to understand the spectrum of possible exotic mesons. In this work, X(3872) meson and its heavy quark ... -
Z(2) structure of the stopping power for electron beams
Gumus, Hasan; Kabadayi, Onder (Elsevier Science Bv, 2009)The target atomic number (Z(2)) dependence of the collision stopping power for electron beams have been investigated for the purpose of determining primary mechanisms in stopping of electrons in elemental matter. The ...
