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Research Output 1990 2019

  • 564 Citations
  • 10 h-Index
  • 51 Article
  • 37 Conference article
  • 12 Conference contribution
  • 1 Paper
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Article
2019
Neutron Activation Analysis
Neutron activation analysis
Hydraulic fracturing
Waste Water
Sediments

Neutron activation analysis of ancient Italian tile samples

Johnsen, A. M., Durrant, C. B. & Ünlü, K., Dec 1 2019, In : Journal of Radioanalytical and Nuclear Chemistry. 322, 3, p. 1529-1535 7 p.

Research output: Contribution to journalArticle

Neutron Activation Analysis
Neutron activation analysis
Neutrons
Trace Elements
Tile
2018
1 Citation (Scopus)
Neutron Activation Analysis
neutron activation analysis
Neutron activation analysis
Trace Elements
Trace elements
2 Citations (Scopus)

Study of sub-pixel position resolution with time-correlated transient signals in 3D pixelated CdZnTe detectors with varying pixel sizes

Ocampo Giraldo, L., Bolotnikov, A. E., Camarda, G. S., De Geronimo, G., Fried, J., Gul, R., Hodges, D., Hossain, A., Ünlü, K., Vernon, E., Yang, G. & James, R. B., Mar 11 2018, In : Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 884, p. 136-139 4 p.

Research output: Contribution to journalArticle

Pixels
pixels
Detectors
detectors
time signals
2017
4 Citations (Scopus)

Arrays of Position-Sensitive Virtual Frisch-Grid CdZnTe Detectors: Results from a 4× 4 Array Prototype

Ocampo Giraldo, L. A., Bolotnikov, A. E., Camarda, G. S., Cheng, S., De Geronimo, G., McGilloway, A., Fried, J., Hodges, D., Hossain, A., Unlu, K., Petryk, M., Vidal, V., Vernon, E., Yang, G. & James, R. B., Oct 2017, In : IEEE Transactions on Nuclear Science. 64, 10, p. 2698-2705 8 p., 8014510.

Research output: Contribution to journalArticle

grids
prototypes
Detectors
detectors
Cathodes
1 Citation (Scopus)

Nuclear radiation-tolerant wireless transmitter irradiation test results

Carvajal, J. V., Heibel, M. D., Arlia, N. G., Bascom, A. & Ünlü, K., Feb 2017, In : Nuclear Technology. 197, 2, p. 201-208 8 p.

Research output: Contribution to journalArticle

nuclear radiation
Microelectronics
transmitters
Transmitters
Irradiation
1 Citation (Scopus)
Radiation
2 Citations (Scopus)

Using a pulsed laser beam to investigate the feasibility of sub-pixel position resolution with time-correlated transient signals in 3D pixelated CdZnTe detectors

Giraldo, L. O., Bolotnikov, A. E., Camarda, G. S., Cheng, S., De Geronimo, G., McGilloway, A., Fried, J., Hodges, D., Hossain, A., Ünlü, K., Petryk, M., Vidal, V., Vernon, E., Yang, G. & James, R. B., Sep 21 2017, In : Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 867, p. 7-14 8 p.

Research output: Contribution to journalArticle

Pulsed lasers
Laser beams
pulsed lasers
Pixels
pixels
2016
4 Citations (Scopus)

Evaluating bis(2-ethylhexyl) methanediphosphonic acid (H2DEH[MDP]) based polymer ligand film (PLF) for plutonium and uranium extraction

Rim, J. H., Armenta, C. E., Gonzales, E. R., Ünlü, K. & Peterson, D. S., Mar 1 2016, In : Journal of Radioanalytical and Nuclear Chemistry. 307, 3, p. 2327-2332 6 p.

Research output: Contribution to journalArticle

Plutonium
Uranium
Polymers
Ligands
Acids
2015
4 Citations (Scopus)
spent fuels
Spent fuels
Assays
Gamma rays
nuclear fuels
1 Citation (Scopus)

Evaluating ligands for use in polymer ligand film (PLF) for plutonium and uranium extraction

Rim, J. H., Peterson, D. S., Armenta, C. E., Gonzales, E. R. & Ünlü, K., Jul 8 2015, In : Journal of Radioanalytical and Nuclear Chemistry. 305, 1, p. 193-198 6 p.

Research output: Contribution to journalArticle

Plutonium
Uranium
Polymers
Ligands
Acids
14 Citations (Scopus)

Reactor production of 64Cu and 67Cu using enriched zinc target material

Johnsen, A. M., Heidrich, B. J., Durrant, C. B., Bascom, A. J. & Ünlü, K., Jul 8 2015, In : Journal of Radioanalytical and Nuclear Chemistry. 305, 1, p. 61-71 11 p.

Research output: Contribution to journalArticle

Zinc
Irradiation
Fast Neutrons
Mammals
Neutron flux
2013
Nuclear fuels
Curricula
8 Citations (Scopus)

Developing and evaluating di(2-ethylhexyl) orthophosphoric acid (HDEHP) based polymer ligand film (PLF) for plutonium extraction

Rim, J. H., Gonzales, E. R., Armenta, C. E., Ünlü, K. & Peterson, D. S., May 2013, In : Journal of Radioanalytical and Nuclear Chemistry. 296, 2, p. 1099-1103 5 p.

Research output: Contribution to journalArticle

Orthophosphoric acid
Plutonium
Polymers
Ligands
Spectrum Analysis
3 Citations (Scopus)

Geant4 model validation of Compton suppressed system for process monitoring of spent fuel

Bender, S. E., Unlu, K., Orton, C. R. & Schwantes, J. M., Jan 1 2013, In : Journal of Radioanalytical and Nuclear Chemistry. 296, 2, p. 647-654 8 p.

Research output: Contribution to journalArticle

Spent fuels
Process monitoring
Multivariate Analysis
Nuclear fuel reprocessing
Fission products
2012
5 Citations (Scopus)

Determination of self shielding factors and gamma attenuation effects for tree ring samples

Şahin, D. & Ünlü, K., May 2012, In : Journal of Radioanalytical and Nuclear Chemistry. 291, 2, p. 549-553 5 p.

Research output: Contribution to journalArticle

Shielding
Neutron flux
Neutrons
Irradiation
Detectors

Neutronic analysis of the new Penn State Breazeale Reactor core design using MCNP5 code

Uçar, D. & Unlu, K., 2012, In : Transactions of the American Nuclear Society. 106, p. 299-300 2 p.

Research output: Contribution to journalArticle

Reactor cores

Reactor based production and purification of 64Cu and 67Cu

Johnsen, A. M., Durrant, C. B., Heidrich, B. J. & Unlu, K., 2012, In : Transactions of the American Nuclear Society. 106, p. 315-316 2 p.

Research output: Contribution to journalArticle

Purification
2011
1 Citation (Scopus)
Cosmic rays
cosmic rays
Neutrons
chips
neutrons
1 Citation (Scopus)
Neutrons
chips
neutrons
Silicon
silicon
2009
2 Citations (Scopus)

Activity, exposure rate and spectrum prediction with Java programming

Şahin, D. & Ünlü, K., Oct 1 2009, In : Journal of Radioanalytical and Nuclear Chemistry. 282, 1, p. 161-165 5 p.

Research output: Contribution to journalArticle

Neutron activation analysis
Software
Neutron Activation Analysis
Java programming language
Radiation
6 Citations (Scopus)

Dating volcanic eruptions with tree-ring chemistry

Ünlü, K., Pearson, C., Hauck, D. K. & Kuniholm, P. I., Jan 1 2009, In : IEEE Potentials. 28, 5, p. 36-44 9 p.

Research output: Contribution to journalArticle

chemistry

Initial design considerations of neutron intercepting silicon chip (NISC)

Çelik, C. & Unlu, K., 2009, In : Transactions of the American Nuclear Society. 101, p. 339-340 2 p.

Research output: Contribution to journalArticle

Neutrons
Silicon
National security
Detectors
Sensors
7 Citations (Scopus)

Modeling a gamma spectroscopy system and predicting spectra with Geant-4

Şahin, D. & Ünlü, K., Oct 1 2009, In : Journal of Radioanalytical and Nuclear Chemistry. 282, 1, p. 167-172 6 p.

Research output: Contribution to journalArticle

Neutron Activation Analysis
Neutron activation analysis
Spectrum Analysis
Spectroscopy
Radiation
33 Citations (Scopus)

Modeling soft errors at the device and logic levels for combinational circuits

Ramanarayanan, R., Degalahal, V. S., Krishnan, R., Kim, J., Narayanan, V., Xie, Y., Irwin, M. J. & Unlu, K., Jul 1 2009, In : IEEE Transactions on Dependable and Secure Computing. 6, 3, p. 202-216 15 p., 4358716.

Research output: Contribution to journalArticle

Combinatorial circuits
Networks (circuits)
Logic circuits
Error analysis
Scalability
2008
5 Citations (Scopus)

Compton suppression system at Penn State Radiation Science and Engineering Center

Çetiner, N. Ö., Unlu, K. & Brenizer, J. S., Jun 1 2008, In : Journal of Radioanalytical and Nuclear Chemistry. 276, 3, p. 615-621 7 p.

Research output: Contribution to journalArticle

Gamma Rays
Radiation
Detectors
Photons
Neutrons
9 Citations (Scopus)

Development and applications of time-of-flight neutron depth profiling (TOF-NDP)

Çetiner, S. M., Ünlü, K. & Downing, R. G., Jun 1 2008, In : Journal of Radioanalytical and Nuclear Chemistry. 276, 3, p. 623-630 8 p.

Research output: Contribution to journalArticle

Depth profiling
Neutrons
Semiconductor detectors
Silicon detectors
Semiconductors

Thermal neutron induced soft error rate measurement in semiconductor memories and circuits

Çelik, C., Ünlü, K., Ramakrishnan, K., Rajaraman, R., Narayanan, V., Irwin, M. J. & Xie, Y., Nov 1 2008, In : Journal of Radioanalytical and Nuclear Chemistry. 278, 2, p. 509-512 4 p.

Research output: Contribution to journalArticle

Semiconductors
Neutrons
Hot Temperature
Semiconductor materials
Data storage equipment
2007
4 Citations (Scopus)
Depth profiling
Boron
Semiconductor detectors
Neutrons
boron
5 Citations (Scopus)

Development of time-of-flight neutron depth profiling at Penn State University

Çetiner, S. M., Ünlü, K. & Downing, R. G., Feb 1 2007, In : Journal of Radioanalytical and Nuclear Chemistry. 271, 2, p. 275-281 7 p.

Research output: Contribution to journalArticle

Depth profiling
Neutrons
Detectors
Nuclear Reactors
Electric power measurement
9 Citations (Scopus)
Neutrons
Semiconductor materials
Data storage equipment
neutrons
thermal neutrons

Silver and gold: Possible evidence of dust storms in tree-rings

Schwarz, D. K. H. & Unlu, K., 2007, In : Transactions of the American Nuclear Society. 97, p. 257-258 2 p.

Research output: Contribution to journalArticle

Dust
Silver
Gold
2006
2 Citations (Scopus)

Modeling and optimization of existing beam port facility of PSBR

Alim, F., Bekar, K., Ivanov, K., Unlu, K., Brenizer, J. & Azmy, Y., Nov 1 2006, In : Annals of Nuclear Energy. 33, 17-18, p. 1391-1395 5 p.

Research output: Contribution to journalArticle

Moderators
Neutron beams
Reactor cores
modeling
Neutrons
2005
2 Citations (Scopus)

Cold neutron PGAA facility developments at university research reactors in the USA

Unlu, K. & Ríos-Martínez, C., Aug 1 2005, In : Journal of Radioanalytical and Nuclear Chemistry. 265, 2, p. 329-338 10 p.

Research output: Contribution to journalArticle

Research reactors
Moderators
Neutrons
Thermosyphons
Neon
13 Citations (Scopus)

Neutron activation analysis of absolutely-dated tree rings

Ünlü, K., Kuniholm, P. I., Chiment, J. J. & Hauck, D. K., Apr 1 2005, In : Journal of Radioanalytical and Nuclear Chemistry. 264, 1, p. 21-27 7 p.

Research output: Contribution to journalArticle

Neutron Activation Analysis
Neutron activation analysis
Gold
Greece
Wood
7 Citations (Scopus)

Performance and calibration of a neutron image intensifier tube based real-time radiography system

Deinert, M. R., Lowe, C. W., Parlange, J. Y., Unlu, K. & Cady, K. B., Feb 1 2005, In : IEEE Transactions on Nuclear Science. 52, 1 II, p. 349-355 7 p.

Research output: Contribution to journalArticle

Neutron radiography
image intensifiers
Radiography
radiography
neutron radiography
221 Citations (Scopus)

Study of water distribution and transport in a polymer electrolyte fuel cell using neutron imaging

Pekula, N., Heller, K., Chuang, P. A., Turhan, A., Mench, M. M., Brenizer, J. S. & Ünlü, K., Apr 21 2005, In : Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 542, 1-3, p. 134-141 8 p.

Research output: Contribution to journalArticle

fuel cells
Fuel cells
Neutrons
Electrolytes
electrolytes
2004
49 Citations (Scopus)

Measurement of fluid contents and wetting front profiles by real-time neutron radiography

Deinert, M. R., Parlange, J. Y., Steenhuis, T., Throop, J., Unlu, K. & Cady, K. B., May 25 2004, In : Journal of Hydrology. 290, 3-4, p. 192-201 10 p.

Research output: Contribution to journalArticle

wetting front
radiography
diffusivity
flow field
fluid
2003
1 Citation (Scopus)

Development of a Single-Disk Neutron Chopper for Time-of-Flight Spectroscopy at Penn State

Niederhaus, J., Brenizer, J. & Unlu, K., 2003, In : Transactions of the American Nuclear Society. 89, p. 677 1 p.

Research output: Contribution to journalArticle

Neutrons
Spectroscopy
1999
5 Citations (Scopus)

Development of Texas intense positron source

Köymen, A. R., Ünlü, K., Jacobsen, F. M., Göktepeli, S. & Wehring, B. W., Dec 1 1999, In : Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 422, 1-3, p. 479-483 5 p.

Research output: Contribution to journalArticle

Positrons
positrons
Nuclear engineering
reactors
Teaching
10 Citations (Scopus)
boron 10
depth measurement
helium isotopes
Depth profiling
Helium
1998
9 Citations (Scopus)

Performance of the University of Texas cold-neutron prompt gamma activation analysis facility

Ríos-Martínez, C., Unlu, K. & Wehring, B. W., 1998, In : Journal of Radioanalytical and Nuclear Chemistry. 234, 1-2, p. 119-123 5 p.

Research output: Contribution to journalArticle

Activation analysis
Activation Analysis
Neutrons
Neutron beams
Research reactors
1997
10 Citations (Scopus)

Application of cold-neutron prompt gamma activation analysis at the University of Texas reactor

Wehring, B. W., Unlu, K. & Ríos-Martínez, C., Oct 1 1997, In : Applied Radiation and Isotopes. 48, 10-12, p. 1343-1348 6 p.

Research output: Contribution to journalArticle

activation analysis
cold neutrons
reactors
neutrons
neutron sources
4 Citations (Scopus)

Neutron depth profiling applications at The University of Texas research reactor

Ünlü, K. & Wehring, B. W., Jul 7 1997, In : Journal of Radioanalytical and Nuclear Chemistry. 217, 2, p. 273-278 6 p.

Research output: Contribution to journalArticle

Research reactors
Depth profiling
Neutrons
Helium
Research
1995
18 Citations (Scopus)

Prompt Gamma Activation Analysis with the Texas Cold Neutron Source

Unlu, K., Rios-Martinez, C. & Wehring, B. W., May 1 1995, In : Journal of Radioanalytical and Nuclear Chemistry Articles. 193, 1, p. 145-154 10 p.

Research output: Contribution to journalArticle

Activation analysis
Activation Analysis
Neutron sources
Neutrons
Neutron beams
2 Citations (Scopus)

Turks take steps to revive their nuclear programme

Unlu, K., Jan 1 1995, Nuclear Engineering International, 40, 486, p. 16-17 2 p.

Research output: Contribution to specialist publicationArticle

Energy resources
Electricity
1994
11 Citations (Scopus)

Neutron depth profiling at the University of Texas

Unlu, K. & Wehring, B. W., Dec 30 1994, In : Nuclear Inst. and Methods in Physics Research, A. 353, 1-3, p. 402-405 4 p.

Research output: Contribution to journalArticle

Depth profiling
Neutrons
neutrons
chambers
neutron beams
7 Citations (Scopus)

Neutron focusing system for the Texas Cold Neutron Source

Wehring, B. W., Kim, J. Y. & Ünlü, K., Dec 30 1994, In : Nuclear Inst. and Methods in Physics Research, A. 353, 1-3, p. 137-140 4 p.

Research output: Contribution to journalArticle

cold neutrons
Neutron sources
neutron sources
Neutrons
neutrons
16 Citations (Scopus)

The University of Texas Cold Neutron Source

Unlu, K., Ríos-Martínez, C. & Wehring, B. W., Dec 30 1994, In : Nuclear Inst. and Methods in Physics Research, A. 353, 1-3, p. 397-401 5 p.

Research output: Contribution to journalArticle

cold neutrons
Neutron sources
neutron sources
Neutrons
neutrons
1992
2 Citations (Scopus)

Helium-3 behavior in some nickel-based amorphous alloys

Unlu, K. & Vincent, D., Apr 1992, In : Nuclear Science and Engineering. 110, 4, p. 386-393 8 p.

Research output: Contribution to journalArticle

Amorphous alloys
Helium
Nickel
Annealing
Electron diffraction