You are here:

Dr Annika Lohstroh

Lecturer

Qualifications: Dipl. Phys., PhD, PGCAP

Email:
Phone: Work: 01483 68 9419
Room no: 17 BB 03

Further information

Biography

Annika Lohstroh grew up in central Germany, where she studied for her undergraduate Diploma in Physics at Göttingen University. She developed an interest in nuclear solid state physics during a 6 month exchange programme with the Catholic University Louvain (Belgium). Subsequently, she continued to study this area of physics that uses techniques originating in nuclear physics to investigate semiconductor properties, like hyperfine interaction methods and ion beam analysis. She moved to Guildford during Summer 2002 and obtained her PhD at the University of Surrey, researching charge transport properties in wide band gap semiconductors for radiation detection applications, with a particular emphasis on chemical vapour deposited diamond. She extended these studies as a Research Fellow at  the University of Surrey during the following years and was appointed as Lecturer in 2008. Her scientific aim is to understand the limitations of current radiation detector performance and to find ways to overcome these limits.

Dr Lohstroh is currently (2010-2011) the Chair of the Radiation Detection Instrumentation Research Theme of SEPnet (South East Physics Network).

Research Interests

Research and development of solid state sensors for ionizing radiation, in particular 

  • the effect of bulk and surface defects on sensor performance.
  • the effect of electrode materials and processing for semiconductor detectors
  • development of pulse shape analysis for research and applications

Current investigation include

  • Development of fast timing detectors based in polycrystalline electronic grade diamond
  • Single crystal diamond for particle detection and X-ray dosimetry
  • SiC for particle detection - including neurtrons
  • Cadmium(Zinc)Telluride for high energy X-ray detection
  • HgI2 and TlBr for high energy X-ray detection
  • Properties and applications for Silicon Photomultiplier diodes in combination with scintillators, particularly for fast timing.

Publications

Highlights

  • Prekas G, Sellin PJ, Veeramani P, Davies AW, Lohstroh A, Ozsan ME, Veale MC. (2010) 'Investigation of the internal electric field distribution under in situ x-ray irradiation and under low temperature conditions by the means of the Pockels effect'. IOP PUBLISHING LTD J PHYS D APPL PHYS, 43 (8) Article number 085102
    doi: 10.1088/0022-3727/43/8/085102
  • Gkoumas S, Lohstroh A, Sellin PJ. (2009) 'Low temperature time of flight mobility measurements on synthetic single crystal diamond'. ELSEVIER SCIENCE SA DIAM RELAT MATER, 18 (11), pp. 1338-1342.
    doi: 10.1016/j.diamond.2009.07.006
  • Xu Y, Sellin PJ, Lohstroh A, Jie W, Wang T, Mills C, Veeramani P, Veale M. (2009) 'Comparison of the x-ray spectroscopy response and charge transport properties of semi-insulating In/Al doped CdZnTe crystals'. AMER INST PHYSICS J APPL PHYS, 105 (8) Article number 083101
    doi: 10.1063/1.3097301
    Full text is available at: http://epubs.surrey.ac.uk/102451/

Journal articles

  • Chaudhuri SK, Lohstroh A, Nakhostin M, Sellin PJ. (2012) 'Digital pulse height correction in HgI 2 γ-ray detectors'. Journal of Instrumentation, 7 (4)
  • Abdel-Rahman MAE, Lohstroh A, Jayawardena I, Henley SJ. (2012) 'The X-ray detection performance of polycrystalline CVD diamond with pulsed laser deposited carbon electrodes'. Elsevier Diamond and Related Materials, 22, pp. 70-76.
    doi: 10.1016/j.diamond.2011.12.017
  • Jeynes C, Webb RP, Lohstroh A. (2011) 'Ion Beam Analysis: A Century of Exploiting the Electronic and Nuclear Structure of the Atom for Materials Characterisation'. World Scientific Reviews of Accelerator Science and Technology, 4, pp. 41-82.
    doi: 10.1142/S1793626811000483
  • Abdel-Rahman MAE, Lohstroh A, Sellin PJ. (2011) 'The effect of annealing on the X-ray induced photocurrent characteristics of CVD diamond radiation detectors with different electrical contacts'. WILEY-BLACKWELL PHYS STATUS SOLIDI A, 208 (9), pp. 2079-2086.
    doi: 10.1002/pssa.201100011
  • Avella P, De Santo A, Lohstroh A, Sajjad MT, Sellin PJ. (2011) 'A study of timing properties of Silicon Photomultipliers'. Elsevier Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment,
    doi: 10.1016/j.nima.2011.11.049

    [ Status: Accepted ]
  • Lohstroh A, Sellin PJ, Gkoumas S, Al-Barakaty H, Veeramani P, Ozsan ME, Prekas G, Veale MC, Parkin JM, Davies AW. (2010) 'The effect of fast neutron irradiation on the performance of synthetic single crystal diamond particle detectors'. ELSEVIER SCIENCE SA DIAMOND AND RELATED MATERIALS, Athens, GREECE: 19 (7-9), pp. 841-845.
    doi: 10.1016/j.diamond.2010.02.006
    Full text is available at: http://epubs.surrey.ac.uk/7672/
  • Prekas G, Sellin PJ, Veeramani P, Davies AW, Lohstroh A, Ozsan ME, Veale MC. (2010) 'Investigation of the internal electric field distribution under in situ x-ray irradiation and under low temperature conditions by the means of the Pockels effect'. IOP PUBLISHING LTD J PHYS D APPL PHYS, 43 (8) Article number 085102
    doi: 10.1088/0022-3727/43/8/085102
  • Ozsan ME, Sellin PJ, Veeramani P, Hinder SJ, Monnier MLT, Prekas G, Lohstroh A, Baker MA. (2010) 'Chemical etching and surface oxidation studies of cadmium zinc telluride radiation detectors'. WILEY-BLACKWELL SURFACE AND INTERFACE ANALYSIS, Antalya, TURKEY: 42 (6-7), pp. 795-798.
    doi: 10.1002/sia.3146
  • Gkoumas S, Lohstroh A, Sellin PJ. (2009) 'Low temperature time of flight mobility measurements on synthetic single crystal diamond'. ELSEVIER SCIENCE SA DIAM RELAT MATER, 18 (11), pp. 1338-1342.
    doi: 10.1016/j.diamond.2009.07.006
  • Xu Y, Sellin PJ, Lohstroh A, Jie W, Wang T, Mills C, Veeramani P, Veale M. (2009) 'Comparison of the x-ray spectroscopy response and charge transport properties of semi-insulating In/Al doped CdZnTe crystals'. AMER INST PHYSICS J APPL PHYS, 105 (8) Article number 083101
    doi: 10.1063/1.3097301
    Full text is available at: http://epubs.surrey.ac.uk/102451/
  • Veale MC, Sellin PJ, Parkin J, Lohstroh A, Davies AW, Seller P. (2008) 'Ion Beam Induced Charge Studies of CdZnTe Grown by Modified Vertical Bridgman Method'. IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC IEEE T NUCL SCI, 55 (6), pp. 3741-3745.
    doi: 10.1109/TNS.2008.2006745
    Full text is available at: http://epubs.surrey.ac.uk/369/
  • Lohstroh A, Sellin PJ, Gkoumas S, Parkin J, Veeramani P, Prekas G, Veale MC, Morse J. (2008) 'Ion beam induced charge (IBIC) irradiation damage study in synthetic single crystal diamond using 2.6 MeV protons'. WILEY-V C H VERLAG GMBH PHYS STATUS SOLIDI A, 205 (9), pp. 2211-2215.
    doi: 10.1002/pssa.200879701
  • Lohstroh A, Sellin PJ, Wang SG, Davies AW, Parkin JM. (2007) 'Mapping of polarization and detrapping effects in synthetic single crystal chemical vapor deposited diamond by ion beam induced charge imaging'. AMER INST PHYSICS J APPL PHYS, 101 (6) Article number 063711
    doi: 10.1063/1.2653669
    Full text is available at: http://epubs.surrey.ac.uk/266/
  • Lohstroh A, Sellin PJ, Wang SG, Davies AW, Parkin J, Martin RW, Edwards PR. (2007) 'Effect of dislocations on charge carrier mobility-lifetime product in synthetic single crystal diamond'. AMER INST PHYSICS APPL PHYS LETT, 90 (10) Article number 102111
    doi: 10.1063/1.2711754
    Full text is available at: http://epubs.surrey.ac.uk/318/
  • Wang SG, Sellin P, Lohstroh A. (2006) 'Temperature-dependent hole detrapping for unprimed polycrystalline chemical vapor deposited diamond'. AMER INST PHYSICS APPL PHYS LETT, 88 (2) Article number 023501
    doi: 10.1063/1.2162673
    Full text is available at: http://epubs.surrey.ac.uk/244/
  • Sellin PJ, Davies AW, Lohstroh A, Ozsan ME, Parkin J. (2005) 'Drift mobility and mobility-lifetime products in CdTe : Cl grown by the travelling heater method'. IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC IEEE T NUCL SCI, 52 (6), pp. 3074-3078.
    Full text is available at: http://epubs.surrey.ac.uk/177/
  • Wang S, Sellin P, Lohstroh A. (2005) 'Alpha particle transient response of a polycrystalline diamond detector'. PERGAMON-ELSEVIER SCIENCE LTD CARBON, 43 (15), pp. 3167-3171.
    doi: 10.1016/j.carbon.2005.06.023
  • Wang SG, Sellin PJ, Lohstroh A, Zhang Q. (2005) 'Performance improvement of polycrystalline diamond ultraviolet photodetectors by room-temperature plasma treatment'. AMER INST PHYSICS APPL PHYS LETT, 86 (9) Article number 093503
    doi: 10.1063/1.1868862
    Full text is available at: http://epubs.surrey.ac.uk/133/
  • Wang SG, Sellin PJ, Lohstroh A, Özsan ME. (2005) 'Pulse shape study of chemical vapor deposited diamond alpha particle detectors'. Materials Research Society Symposium Proceedings, 828, pp. 369-374.
  • Sellin PJ, Lohstroh A, Simon A, Breese MBH. (2004) 'Digital IBIC-new spectroscopic modalities for ion-beam-induced charge imaging'. ELSEVIER SCIENCE BV NUCL INSTRUM METH A, 521 (2-3), pp. 600-607.
    doi: 10.1016/j.nima.2003.11.248
  • Kulinska A, Uhrmacher M, Dedryvere R, Lohstroh A, Hofsass H, Lieb KP, Picard-Garcia A, Jumas JC. (2004) 'Lithium insertion into In2S3 studied by perturbed gamma-gamma angular correlation'. ACADEMIC PRESS INC ELSEVIER SCIENCE J SOLID STATE CHEM, 177 (1), pp. 109-118.
    doi: 10.1016/S0022-4596(03)00328-1

Conference papers

  • Sellin PJ, Prekas G, Lohstroh A, Ozsan M, Perumal V, Veale M, Seller P. (2009) 'Real-time imaging of the electric field distribution in CdZnTe at low temperature'. Materials Research Society Symposium Proceedings, San Francisco, USA: MRS 2009 Spring Meeting Symposium L: Nuclear Radiation and Detection of Materials 1164, pp. 15-24.
    doi: 10.1557/PROC-1164-L03-03
  • Sellin PJ, Davies AW, Gkoumas S, Lohstroh A, Ozsan ME, Parkin J, Perumal V, Prekas G, Veale M. (2008) 'Ion beam induced charge imaging of charge transport in CdTe and CdZnTe'. ELSEVIER SCIENCE BV NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, Univ Hyderabad, Sch Phys, Hyderabad, INDIA: 18th International Conference on Ion Beam Analysis 266 (8), pp. 1300-1306.
    doi: 10.1016/j.nimb.2007.11.074
  • Lohstroh A, Selfin PJ, Boroumand F, Morse J. (2007) 'High gain observed in X-ray induced currents in synthetic single crystal diamonds'. WILEY-V C H VERLAG GMBH PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, Hasselt Univ, Diepenbeek-Hasselt, BELGIUM: 12th Hasselt Diamond Workshop 2007 (SBDD XII) 204 (9), pp. 3011-3016.
    doi: 10.1002/pssa.200776332
  • Sellin PJ, Lohstroh A, Davies AW, Galbiati A, Parkin J, Wang SG, Simon A. (2007) 'Charge transport in polycrystalline and single crystal synthetic diamond using ion beam induced charge imaging'. ELSEVIER SCIENCE BV NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, Singapore, SINGAPORE: 10th International Conference on Nuclear Microprobe Technology and Applications held in Conjunction with the 2nd International Workshop on Proton Beam Writing 260 (1), pp. 293-298.
    doi: 10.1016/j.nimb.2007.02.036
  • Veale MC, Sellin PJ, Lohstroh A, Davies AW, Parkin J, Seller P. (2007) 'X-ray spectroscopy and charge transport properties of CdZnTe grown by the vertical Bridgman method'. ELSEVIER SCIENCE BV NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Pisa, ITALY: 8th International Workshop on Radiation Imaging Detectors 576 (1), pp. 90-94.
    doi: 10.1016/j.nima.2007.01.127
  • Baier N, Brambilla A, Feuillet G, Lohstroh A, Renet S, Sellin P. (2007) 'EBIC and IBIC imaging on polyerystalline CdTe'. ELSEVIER SCIENCE BV NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Pisa, ITALY: 8th International Workshop on Radiation Imaging Detectors 576 (1), pp. 5-9.
    doi: 10.1016/j.nima.2007.01.109
  • Sellin PJ, Davies AW, Boroumand F, Lohstroh A, Ozsan ME, Parkin J, Veale M. (2007) 'IBIC characterization of charge transport in CdTe : Cl'. MAIK NAUKA/INTERPERIODICA/SPRINGER SEMICONDUCTORS, St Petersburg, RUSSIA: 8th International Workshop on Beam Injection Assessment of Microstructures in Semiconductors 41 (4), pp. 395-401.
    doi: 10.1134/S1063782607040069
  • Parkin J, Sellin PJ, Davies AW, Lohstroh A, Ozsan ME, Seller P. (2007) 'alpha Particle response of undoped CdMnTe'. ELSEVIER SCIENCE BV NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Univ Liverpool, Liverpool, ENGLAND: 7th International Conference on Position-Senstive Detectors 573 (1-2), pp. 220-223.
    doi: 10.1016/j.nima.2006.10.386
  • Davies AW, Lohstroh A, Ozsan ME, Sellin PJ. (2005) 'Spatial uniformity of electron charge transport in high resistivity CdTe'. ELSEVIER SCIENCE BV NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Univ Glasgow, Glasgow, SCOTLAND: 6th International Workshop on Radiation Imaging Detectors 546 (1-2), pp. 192-199.
    doi: 10.1016/j.nima.2005.03.024
  • Wang SG, Sellin PJ, Zhang Q, Lohstroh A, Ozsan ME, Tian JZ. (2005) 'The effects of plasma post-treatment on the photoresponsivity of CVD diamond UV photodetectors'. ELSEVIER SCIENCE SA DIAMOND AND RELATED MATERIALS, Riva del Garda, ITALY: 15th European Conference on Diamond, Diamond-Like Materials, Carbon Nanotubes, Nitrides, and Silicon Carbide 14 (3-7), pp. 541-545.
    doi: 10.1016/j.diamond.2004.10.038
  • Wang SG, Sellin PJ, Zhang Q, Lu FX, Tang WZ, Lohstroh A. (2005) 'The fabrication and performance of CVD diamond-based X-ray detectors'. TRANS TECH PUBLICATIONS LTD PRICM 5: THE FIFTH PACIFIC RIM INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS AND PROCESSING, PTS 1-5, Beijing, PEOPLES R CHINA: 5th Pacific Rim International Conference on Advanced Materials and Processing 475-479, pp. 3605-3609.
  • Sellin PJ, Hoxley D, Lohstroh A, Simon A, Cunningham W, Rahman M, Vaitkus J, Gaubas E. (2004) 'Ion beam induced charge imaging of epitaxial GaN detectors'. ELSEVIER SCIENCE BV NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Riga, LATVIA: 5th International Workshop on Radiation Imaging Detectors 531 (1-2), pp. 82-86.
    doi: 10.1016/j.nima.2004.05.078
  • Simon A, Sellin PJ, Lohstroh A. (2004) 'IBIC imaging of intra-crystallite charge transport in CVD diamond at reduced temperature'. ELSEVIER SCIENCE BV NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, Albuquerque, NM: 16th International Conference on Ion Beam Analysis 219-20, pp. 1022-1026.
    doi: 10.1016/j.nimb.2004.01.207
  • Lohstroh A, Sellin PJ, Simon A. (2004) 'High-resolution mapping of the mobility-lifetime product in CdZnTe using a nuclear microprobe'. IOP PUBLISHING LTD JOURNAL OF PHYSICS-CONDENSED MATTER, LILLE, FRANCE: 7th International Workshop on Beam Injection Assessment of Microstructures in Semconductors 16 (2), pp. S67-S73.
    doi: 10.1088/0953-8984/16/2/008
  • Lohstroh A, Uhrmacher M, Wilbrandt PJ, Wulff H, Ziegeler L, Lieb KP. (2004) 'Electronic relaxation in indium oxide films studied with perturbed angular correlations'. SPRINGER HYPERFINE INTERACTIONS, Bonn, GERMANY: Joint Meeting of the 13th International Conference on Hyperfine Interactions/17th International Symposium on Nuclear Quadrupole Interactions (HFI/NQI 2004) 159 (1-4), pp. 35-42.
    doi: 10.1007/s10751-005-9078-3
  • Sellin P, Ozsan ME, Hoxley D, Lohstroh A, Siffert P, Sowinska M, Simon A. (2004) 'The role of defects on CdTe detector performance'. IEEE 2003 IEEE NUCLEAR SCIENCE SYMPOSIUM, CONFERENCE RECORD, VOLS 1-5, Portland, OR: IEEE Nuclear Science Symposium/Medical Imaging Conference, pp. 3306-3310.
  • Simon A, Sellin P, Lohstroh A, Jeynes C. (2003) 'Ion beam indneed charge microscopy imaging of CVD diamond'. IOP PUBLISHING LTD MICROSCOPY OF SEMICONDUCTING MATERIALS 2003, Univ Cambridge, Cambridge, ENGLAND: Conference on Microscopy of Semiconducting Materials (180), pp. 449-452.
  • Vetter U, Uhrmacher M, Schwen D, Lohstroh A, Hofsass H, Lieb KP. (2001) 'Lattice location studies of indium in Cr2O3'. KLUWER ACADEMIC PUBL HYPERFINE INTERACTIONS, PARK CITY, UTAH: 12th International Conference on Hyperfine Interactions 136, pp. 607-612.
  • Dedryvere R, Uhrmacher M, Lohstroh A, Picard-Garcia A, Olivier-Fourcade J, Jumas JC. (2001) 'Lithium in In2S3'. KLUWER ACADEMIC PUBL HYPERFINE INTERACTIONS, PARK CITY, UTAH: 12th International Conference on Hyperfine Interactions 136, pp. 479-484.

Teaching

  • 1st year undergraduate laboratory
  • 2nd year lecture course "Radiation detection and measurement"
  • Final year project coordination
  • Coordination of RDI group projects
  • (Part of the) Postgraduate tutorial for new PhD students in Detector physics
  • Supervision of MSc projects

Departmental Duties

  • Director of the MSc Physics (Euro Master)
  • Final year project (BSc) coordinator
  • Erasmus/Sokrates and Student Exchange coordinator 
  • Physsoc liaison