Melahat Bilge Demirköz

E-mail

demirkoz@metu.edu.tr

Department

Department of Physics

ORCID

0000-0001-7171-5976

Scopus Author ID

56365556300

Web of Science Researcher ID

C-8179-2014

Ulexite/HDPE-Bi2O3/HDPE layered composites for neutron and gamma radiation shielding ALVER, ÜMİT; Duran, Selcen Uzun; Demirköz, Melahat Bilge; Muçogllava, Brunilda; ASLAN, MUSTAFA; ÇAVA, KUTAY; ÖZKALAYCI, FATİH; Dindar, Osman (2023-10-01) In this study, 5, 10, and 15 wt% ulexite (NaCaB5O6(ΟH)6·5H2O, hydrated sodium calcium borate hydroxide) and 15 wt %Bi2O3 filled high density polyethylene (HDPE) composite materials were fabricated through conventional melt...
A Novel Approach to Space Radiation Tests by Using High Power Laser Plasma Interactions Keskin, M. Yigitoglu; Demirköz, Melahat Bilge; Culfa, O. (2023-06-01) Abstract: The potential for protons and ions accelerated by ultra-intense high power laser systems was investigated to perform space radiation tests for electronic components and materials which will be used in space. Curr...
METU-DBL: a cost effective proton irradiation facility KARADÖLLER, EGECAN; Uzun Duran, S.; Kılıç, U.; Hashmani, R.; Demirköz, Melahat Bilge; Efthymiopoulos, I.; Can, Ali; Çakmakoğlu, S.; Muçogllava, B.; Kayaalp, A.; Zorlu, C. (2023-06-01) Abstract The Middle East Technical University Defocusing Beamline (METU-DBL) is designed to deliver protons with selectable kinetic energies between 15-30 MeV, and proton flux between 106-1010 protons/cm2/s, on a maximum 2...
Effect of proton irradiation on the performance of fluxgate sensors İÇİN, KÜRŞAT; Can, H.; Akyol, S.; Uslu Kiçeci, P.; Topal, U.; ÖZTÜRK, SEDA; Demirköz, Melahat Bilge; Sözeri, H. (2023-04-25) The fluxgate magnetometers have been used in many space missions due to their stability, low cost, low mass, and good measuring sensitivity and range. Space weather conditions around the Earth and solar system may be dange...
VULNERABILITY OF ECONOMIC SECTORS TO GEOMAGNETIC STORMS AND MITIGATION STRATEGIES Demirköz, Melahat Bilge; Karagöz, G.; Kadloǧlu, Y.K.; Sözeri, H. (2023-04-21) Solar storms and CMEs increase the amount of radiation that reaches the Earth and can perturb the magnetic shielding of the Earth. K and Kp indices quantify this perturbation by using magnetometers calibrated accordingly t...
New monitoring interface for the AMS experiment Hashmani, Raheem Karim; Konyushikhin, Maxim; Shan, Baosong; Cai, Xudong; Demirköz, Melahat Bilge (2023-1-11) The Alpha Magnetic Spectrometer (AMS) is constantly exposed to harsh condition on the ISS. As such, there is a need to constantly monitor and perform adjustments to ensure the AMS operates safely and efficiently. With the ...
Radioactivation Measurement of a Protective Collimator and Comparisons with Simulation After METU-Defocusing Beamline Pretest Irradiation Uzun Duran, Selcen ; Demirköz, Melahat Bilge; Uslu Kiceci, Pelin (2023-01-01) Electronic components must be tested to allow for safe and reliable missions in radiation environments. The METU Defocusing Beamline (METU-DBL) was installed in the R&D room at the Particle Accelerator Facility (PAF) of Tu...
Jeomanyetik Fırtınalar, Gözlemevleri ve Ülkemizde Jeomanyetik KP İndisinin Hesaplanması Demirköz, Melahat Bilge; KARAGÖZ, GÜLCE; KADIOĞLU, YUSUF KAĞAN; SÖZERİ, HÜSEYİN; ÖCAL, SULTAN EYLÜL (2022-11-18)
Radiation Testing of Commercial Rechargeable Lithium Polymer Batteries for Small Satellite Applications Muçogllava, Brunilda; Karim Hashmani, Raheem; Çakmakoğlu, Selman; Demirköz, Melahat Bilge (2022-11-01) Commercial off-the-shelf (COTS) electrical components are becoming of interest for small satellite applications due to their accessibility, good performance, and low cost. We quantify the performance of Lithium Polymer (Li...
Determination of neutron absorption rates of 5% colemanite, ulexite, B2O3 doped HDPE materials UZUN DURAN, SELCEN; ALVER, ÜMİT; Muçogllava, Brunilda; Demirköz, Melahat Bilge; ÖZKALAYCI, FATİH (2022-07-29)

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