Photo of Ulrik Lund Olsen

Ulrik Lund Olsen

  • Fysikvej, 307, 210

    2800 Kgs. Lyngby

    Denmark

20072021

Research output per year

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Research Output

2020

Single-shot, omni-directional x-ray scattering imaging with a laboratory source and single-photon localization

Dreier, E. S., Silvestre, C., Kehres, J., Turecek, D., Khalil, M., Hemmingsen, J. H., Hansen, O., Jakubek, J., Feidenhans'l, R. K. & Olsen, U. L., 2020, In : Optics Letters. 45, 4, p. 1021-1024

Research output: Contribution to journalJournal articleResearchpeer-review

2019

Effective atomic number and electron density determination using spectral X-ray CT

Busi, M., Kehres, J., Khalil, M. & Olsen, U. L., 2019, Anomaly Detection and Imaging with X-Rays (ADIX) IV. A. A., J. A. G. & M. E. G. (eds.). SPIE - International Society for Optical Engineering, Vol. 10999. 11 p. 1099903. (Proceedings of S P I E - International Society for Optical Engineering).

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Open Access
File
58 Downloads (Pure)

Intrinsic XRF corrections in Timepix3 CdTe spectral detectors

Khalil, M., Turecek, D., Jakubek, J., Kehres, J., Dreier, E. S. & Olsen, U. L., 2019, In : Journal of Instrumentation. 14, 1, 9 p., C01018.

Research output: Contribution to journalConference articleResearchpeer-review

1 Downloads (Pure)

Method for system-independent material characterization from spectral X-ray CT

Busi, M., Mohan, K. A., Dooraghi, A. A., Champley, K. M., Martz, H. E. & Olsen, U. L., 2019, In : NDT&E international. 107, 6 p., 102136.

Research output: Contribution to journalJournal articleResearchpeer-review

Virtual subpixel approach for single-mask phase-contrast imaging using Timepix3

Dreier, E. S., Silvestre, C., Kehres, J., Turecek, D., Khalil, M., Hemmingsen, J. H., Hansen, O., Jakubek, J., Feidenhans'l, R. & Olsen, U. L., 2019, In : Journal of Instrumentation. 14, 01, 9 p., C01011.

Research output: Contribution to journalConference articleResearchpeer-review

Open Access
File
6 Downloads (Pure)
2018

A spectral geometric model for Compton single scatter in PET based on the single scatter simulation approximation: Paper

Kazantsev, I. G., Olsen, U. L., Poulsen, H. F. & Hansen, P. C., 2018, In : Inverse Problems. 34, 2, 15 p., 024002 .

Research output: Contribution to journalJournal articleResearchpeer-review

Simulation tools for scattering corrections in spectrally resolved X-ray Computed Tomography using McXtrace

Busi, M., Olsen, U. L., Knudsen, E. B., Frisvad, J. R., Kehres, J. & Dreier, E. S., 2018, In : Optical Engineering. 57, 3, 10 p., 037105.

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
332 Downloads (Pure)

Spectral correction algorithm for multispectral CdTe x-ray detectors

Dreier, E. S., Kehres, J., Khalil, M., Busi, M., Gu, Y., Feidenhans'l, R. K. & Olsen, U. L., 2018, In : Optical Engineering. 57, 5, 13 p., 054117.

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
323 Downloads (Pure)

Subpixel resolution in CdTe Timepix3 pixel detectors

Khalil, M., Dreier, E. S., Kehres, J., Jakubek, J. & Olsen, U. L., 2018, In : Journal of Synchrotron Radiation. 25, 6, p. 1650-1657

Research output: Contribution to journalJournal articleResearchpeer-review

2017

A METHOD OF SECURITY SCANNING OF CARRY-ON ITEMS, AND A CARRY-ON ITEMS SECURITY SCANNING SYSTEM

Poulsen, H. F., Olsen, U. L. & Kehres, J., 12 Jan 2017, IPC No. G01V 5/ 00 A I, Patent No. WO2017005757, 12 Jan 2017, Priority date 6 Jul 2015, Priority No. EP20150175560

Research output: Patent

Open Access
File
94 Downloads (Pure)

A Monte Carlo simulation of scattering reduction in spectral x-ray computed tomography

Busi, M., Olsen, U. L., Bergbäck Knudsen, E., Frisvad, J. R., Kehres, J., Christensen, E. D., Khalil, M. & Haldrup, K., 2017, Advances in Computational Methods for X-Ray Optics IV. Chubar, O. & Sawhney, K. (eds.). SPIE - International Society for Optical Engineering, Vol. 10388. 9 p. 103880P. (Proceedings of S P I E - International Society for Optical Engineering).

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Open Access
File
199 Downloads (Pure)

Detector response artefacts in spectral reconstruction

Olsen, U. L., Christensen, E. D., Khalil, M., Gu, Y. & Kehres, J., 2017, Proc. SPIE 10391, Developments in X-Ray Tomography XI. SPIE - International Society for Optical Engineering, Vol. 10391. 10 p. (Proceedings of S P I E - International Society for Optical Engineering).

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Open Access
File
157 Downloads (Pure)

Multispectral x-ray CT: multivariate statistical analysis for efficient reconstruction

Kheirabadi, M., Mustafa, W., Lyksborg, M., Olsen, U. L. & Dahl, A. B., 2017, Proceedings Volume 10391, Developments in X-Ray Tomography XI. SPIE - International Society for Optical Engineering, 11 p. (Proceedings of SPIE, the International Society for Optical Engineering, Vol. 1039113).

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Open Access
File
132 Downloads (Pure)

Spectral correction algorithm for multispectral CdTe x-ray detectors

Christensen, E. D., Kehres, J., Gu, Y., Feidenhans’l, R. & Olsen, U. L., 2017, Proc. SPIE 10403, Infrared Remote Sensing and Instrumentation XXV. SPIE - International Society for Optical Engineering, Vol. 10391. 15 p. 103930H. (Proceedings of SPIE, the International Society for Optical Engineering).

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Open Access
File
306 Downloads (Pure)

Threat detection of liquid explosives and precursors from their x-ray scattering pattern using energy dispersive detector technology

Kehres, J., Olsen, U. L. & Lyksborg, M., 2017, Proc. SPIE 10403, Infrared Remote Sensing and Instrumentation XXV. SPIE - International Society for Optical Engineering, Vol. 10391. 9 p. 1039302. (Proceedings of S P I E - International Society for Optical Engineering).

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Open Access
File
199 Downloads (Pure)
2016

A Spectral Geometrical Model for Compton Scatter Tomography Based on the SSS Approximation

Kazantsev, I. G., Olsen, U. L., Poulsen, H. F. & Hansen, P. C., 2016, Proceedings of the The 4th International Conference on Image Formation in X-Ray Computed Tomography. p. 577-580

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Open Access
File
169 Downloads (Pure)
2014

3D -Ray Diffraction Microscopy

Poulsen, H. F., Schmidt, S., Juul Jensen, D., Sørensen, H. O., Lauridsen, E. M., Olsen, U. L., Ludwig, W., King, A., Wright, J. P. & Vaughan, G. B. M., 2014, Strain and Dislocation Gradients from Diffraction: Spatially-Resolved Local Structure and Defects . Barabash, R. & Ice, G. (eds.). World Scientific, p. 205-253

Research output: Chapter in Book/Report/Conference proceedingBook chapterResearchpeer-review

Modeling of in-vehicle magnetic refrigeration

Olsen, U. L., Bahl, C. R. H., Engelbrecht, K., Nielsen, K. K., Tasaki, Y. & Takahashi, H., 2014, In : International Journal of Refrigeration. 37, 1, p. 194-200 7 p.

Research output: Contribution to journalJournal articleResearchpeer-review

The influence of non-magnetocaloric properties on the performance in parallel-plate AMRs

Nielsen, K. K., Bahl, C. R. H., Smith, A., Engelbrecht, K., Olsen, U. L. & Pryds, N., 2014, In : International Journal of Refrigeration. 37, p. 127–134

Research output: Contribution to journalJournal articleResearchpeer-review

2013

Performance analysis of a rotary active magnetic refrigerator

Lozano, J., Engelbrecht, K., Bahl, C. R. H., Nielsen, K. K., Eriksen, D., Olsen, U. L., Barbosa Jr., J. R., Smith, A., Prata, A. T. & Pryds, N., 2013, In : Applied Energy. 111, p. 669-680

Research output: Contribution to journalJournal articleResearchpeer-review

2012

Modeling of In-vehicle Magnetic refrigeration

Olsen, U. L., Bahl, C., Engelbrecht, K., Nielsen, K. K., Tasaki, Y., Takahashi, H. & Yasuda, Y., 2012, Proceedings of the fifth IIF-IIR International Conference on Magnetic Refrigeration at Room Temperature: Thermag V. 9 p.

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Open Access
File
362 Downloads (Pure)

Non-destructive identification of micrometer-scale minerals and their position within a bulk sample

Sørensen, H. O., Hakim, S. S., Pedersen, S., Christiansen, C. B., Balogh, Z. I., Hem, C. P., Pasarin, I. S., Schmidt, S., Olsen, U. L., Oddershede, J., Frandsen, C., Feidenhans’L, R. & Stipp, S. L. S., 2012, In : Canadian Mineralogist. 50, 2, p. 501-509

Research output: Contribution to journalJournal articleResearchpeer-review

The influence of demagnetizing effects on the performance of active magnetic regenerators

Nielsen, K. K., Smith, A., Bahl, C. & Olsen, U. L., 2012, In : Journal of Applied Physics. 112, p. 094905 8 p.

Research output: Contribution to journalJournal articleResearchpeer-review

File
299 Downloads (Pure)

The influence of non-magnetocaloric properties on the AMR performance

Nielsen, K. K., Bahl, C., Smith, A., Engelbrecht, K., Olsen, U. L. & Pryds, N., 2012, Proceedings of the fifth IIF-IIR International Conference on Magnetic Refrigeration at Room Temperature: Thermag V. 8 p.

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Open Access
File
145 Downloads (Pure)
2010

4D characterization of metals by 3DXRD

Poulsen, H. F., Ludwig, W., Lauridsen, E. M., Schmidt, S., Pantleon, W., Olsen, U. L., Oddershede, J., Reischig, P., Lyckegaard, A., Wright, J. & Vaughan, G., 2010, In : Proceedings of the Risø International Symposium on Materials Science. 31, p. 101-119

Research output: Contribution to journalConference articleResearchpeer-review

Open Access
File
352 Downloads (Pure)

The extension of ID11 for nanoscale and hierarchical characterization

Vaughan, G. B. M., Wright, J. P., Bytchkov, A., Curfs, C., Gundlach, C., Orlova, M., Erra, L., Gleyzolle, H., Buslaps, T., Götz, A., Suchet, G., Petitdemange, S., Rossat, M., Margulies, L., Ludwig, W., Snigirev, A., Snigireva, I., Schmidt, S., Sørensen, H. O., Lauridsen, E. M. & 3 others, Olsen, U. L., Oddershede, J. & Poulsen, H. F., 2010, In : Proceedings of the Risø International Symposium on Materials Science. 31, p. 457-476

Research output: Contribution to journalConference articleResearchpeer-review

2009

New generation of efficient high resolution detector for 30-100 keV photons

Olsen, U. L., 2009, Roskilde: Risø National Laboratory for Sustainable Energy. 115 p. (Risø-PhD; No. 46(EN)).

Research output: Book/ReportPh.D. thesis

Open Access
File
100 Downloads (Pure)

Strip detector for nanoscale resolution

Olsen, U. L., Schmidt, S., Poulsen, H. F., Yvind, K. & Ottaviano, L., 2009

Research output: Non-textual formSound/Visual production (digital)Research

File
99 Downloads (Pure)

Structured scintillators for X-ray imaging with micrometre resolution

Olsen, U. L., Schmidt, S., Poulsen, H. F., Linnros, J., Yun, S. H., Di Michiel, M. & Martin, T., 2009, In : Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 607, 1, p. 141-144

Research output: Contribution to journalJournal articleResearchpeer-review

2008

Direct observation of 3-D grain growth in Al–0.1% Mn

Schmidt, S., Olsen, U. L., Poulsen, H. F., Sørensen, H. O., Lauridsen Mejdal, E., Margulies, L., Maurice, C. & Juul Jensen, D., 2008, In : Scripta Materialia. 59, 5, p. 491-494

Research output: Contribution to journalJournal articleResearchpeer-review

Novel synchrotron based techniques for characterization of energy materials

Poulsen, H. F., Nielsen, S. F., Olsen, U. L., Schmidt, S. & Wright, J., 2008, Energy Materials. Advances in Characterization, Modelling and Application: Proceedings. Andersen, N. H., Eldrup, M. M., Hansen, N., Juul Jensen, D., Nielsen, E. M., Nielsen, S. F., Sørensen, B. F., Pedersen, A. S., Vegge, T. & West, S. (eds.). Roskilde: Danmarks Tekniske Universitet, Risø Nationallaboratoriet for Bæredygtig Energi, p. 101-122 413 p.

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

2007

Development of a high-efficiency high-resolution imaging detector for 30–80 keV X-rays

Olsen, U. L., Badel, X., Linnros, J., Michiel, M. D., Martin, T., Schmidt, S. & Poulsen, H. F., 2007, In : Nuclear Instruments and Methods in Physics Research Section A. 576, p. 52-55

Research output: Contribution to journalConference articleResearchpeer-review