Bulgarian Academy of Sciences (BAS)

Solar-Terrestrial Influences Laboratory (STIL)

Space Radiation Investigation Group (SRIG)

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Publications and Power Point Presentations

List of scientific papers of Tsvetan Dachev

Technical Descriptions of Liulin Instruments

Technical Description of Liulin-4 type LET spectrometers (LETS)

Results from Ground-Level-Event-60

Spurny, F., T. Dachev, Measurements in an Aircraft during an Intense Solar Flare, Ground Level Event 60, on the 15th of April 2001, Letter to the Editor of Radiation Protection Dosimetry, Vol. 95, No. 3, pp. 273-275, 2001.

Dachev, Ts., F. Spurný, B. Tomov, P. Dimitrov, Y. Matviichuk, Analysis of the Long Term Dosimetry Results Obtained During Commercial Aircraft Flights, Proceedings of 8^th STIL-BAS conference, 131-134, Sofia, December, 2001.

Spurný, F. Ts. Dačev, K. Kudela, Increase of Onboard Aircraft Exposure Level During a Solar Flare, Bezpecnost jadrovej energie, 11(49), pp 103-107, 2003.

Results from LIULIN on MIR Space Station

Dachev, Ts.P. B.T. Tomov, Yu.N. Matviichuk, R.T. Koleva, J.V. Semkova, V.M. Petrov, V.V. Benghin, Yu.V. Ivanov, V.A. Shurshakov, J. Lemaire, Detailed Study of the SPE and aheir Effects on the Dose Rate and Flux Distribution Observed by LIULIN Insrtument on MIR Space Station, Radiation measurements, 30 (3), pp. 317-325, 1999.

Dachev Ts.P., J.V. Semkova, Yu.N. Matviichuk, B.T. Tomov, R.T. Koleva, P.T. Baynov, V.M. Petrov, V.V. Shurshakov, Yu. Ivanov, Inner Magnetosphere Variations after Solar Proton Events. Observations on Mir Space Station In 1989-1994 Time Period, Adv. Space Res., 22, No 4, 521, 1998.

Dachev, Ts.P. B.T. Tomov, Yu.N. Matviichuk, R.T. Koleva, J.V. Semkova, V.M. Petrov, V.V. Benghin, Yu. V. Ivanov, V.A. Shurshakov, J. Lemaire, Solar Cycle Variations ff MIR Radiation Environment as Observed by the LIULIN Dosimeter, Radiation Measurements, 30 (3), pp. 269-274, 1999.

Aircraft Results

Dachev, Ts.P., E.G. Stassinopoulos, B.T. Tomov, Pl.G. Dimitrov, Yu.N. Matviichuk, V.A. Shurshakov, V.M. Petrov, Analysis of the Cyclotron Facility Calibration and Aircraft Results Obtained by LIULIN-3M Instrument, Advances in Space Research, 32, No 1, 67-71, 2003.

Spurný, F., Ts. Dachev, Long-Term Monitoring of the Onboard Aircraft Exposure Level With Si-Diode Based Spectrometer, Advances in Space Research, 32, No 1, 53-58, 2003.

Calibration Results

Dachev, Ts., B. Tomov, Yu. Matviichuk, Pl. Dimitrov, J. Lemaire, Gh. Gregoire, M. Cyamukungu, H. Schmitz, K. Fujitaka, Y. Uchihori, H. Kitamura, G. Reitz, R. Beaujean, V. Petrov, V. Shurshakov, V. Benghin, F. Spurny, Calibration Results Obtained With Liulin-4 Type Dosimeters, Adv. Space Res., V 30, No 4, 917-925, 2002.

Dachev, Ts., B. Tomov, Pl. Dimitrov, Yu. Matviichuk, K. Fujitaka, Y. Uchihori, H. Kitamura, Calibration of LIULIN-4 type system at HIMAC with heavy ions, 1999 Annual Report of the Research Project with Heavy Ions at NIRS-HIMAC, NIRS, 299-300, April 2000.

Uchihori, Y., H. Kitamura, K. Fujitaka, Ts.P. Dachev, B.T. Tomov, P.G. Dimitrov, Y. Matviichuk, Analysis of the calibration results obtained with Liulin-4J spectrometer-dosimeter on protons and heavy ions, Radiation Measurements, 35, 127-134, 2002.

Power Point Presentations

Dachev, Ts., STIL-BAS – “Acad. D. Mishev” Space  Research Activities-Past, Present and Future, presented at 10^th annual Conference of STIL-BAS, November 2003.

Spurný, F., Ts. Dachev, Long-Term Monitoring of the Onboard Aircraft Exposure Level With Si-Diode Based Spectrometer, paper F2.4-0007 presented at 34th COSPAR Assembly, Houston TX 10-19 Oct. 2002.

Dachev, T.P., F. Spurny, G. Reitz, R. Beaujean, S. Burmeister, V. Shurshakov, B.T. Tomov, P.G. Dimitrov, Y.N. Matviichuk, N.G. Bankov, Comparison of the Space Radiation Environments at Aircraft Altitudes and on International Space Station for April - August 2001, paper F2.4-0009-02 presented at 34^th COSPAR Assembly, Houston TX 10-19 Oct. 2002.

Reitz, G., R Beaujean, Ts. Dachev, S. Deme, W. Heinrich, M. Luszik-Bhadra, J. Kopp, K. Strauch, Space Radiation Dosimetry - Recent Measurements and Future Task, Paper presented at the Workshop on Radiation Monitoring for the International Space Station (WRMISS), Book of Abstracts pp 30, DERA Famborough, Hampshire, England, 3-5 November 1999.

Last modified: 15 June 2004