IEAP - Institute of Experimental and Applied Physics CTU - Czech Technical University in Prague
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IEAP - Institute of Experimental and Applied Physics CTU - Czech Technical University in Prague
CTU - Czech Technical University in Prague
Partial tasks  > TGV (measurement of double beta decay of 48Ca and 106Cd)
TGV (measurement of double beta decay of 48Ca and 106Cd)

TGV is the measurement of double beta decay of 48Ca and 106Cd. The TGV collaboration (IEAP CTU, JINR Dubna, CSNSM, KU Bratislava, INP) has been interested in experimental investigation of ββ decay for several years. The collaboration measured half-live of two-neutrinos double beta decay of 48Ca isotope with the TGV I detector. Based on the experience with the spectrometer TGV I, the more efficient low-background spectrometer TGV II was constructed. The most important feature of the TGV II is its ability to study small amount of materials with high efficiency (especially samples made of isotopes available only in small quantities, e.g. 106Cd). At present the collaboration TGV is devoted to the investigation of the two-neutrinos double electron capture (2νEC/EC) in 106Cd. The result of T1/2 ≥ 3.0 x 1020 years for 2νEC/EC (g.s → g.s) decay of 106Cd has been found after the processing of experimental data obtained after 8700 hours (1 year) of measuring time using approximately 8 gramme of 106Cd. The Phase II of this measurement started in December 2007 with appr. 15 gramme of 106Cd. The Phase II of TGV II experiment is planned for period of 3-4 years.

Coordinator
Štekl Ivan IEAP
Brudanin V.B. JINR

Responsible person

Co-workers
Bočarov Viktor IEAP
Briancon Ch. CSNSM
Kovalík A. INP
Rukhadze N.I. JINR
Šimkovic F. Comenius university
Egorov V. JINR
Mamedov Fadahat IEAP


Articles in Impacted Journals
(19)
Table format
Year

  • "The high sensitivity double beta spectrometer TGV", Nucl. Instr. Meth. Phys. Res. A 372 (1996) 222-228

  • "Present Status and Future of the Experiment TGV", Czech. Journal of Phys. vol.48, No.2 (1998) 165-166

  • "Proposal of Measurement of Double Beta Decay of 106Cd", Czech. Journal of Phys. vol.48, No.2 (1998) 249-252

  • V. Brudanin, P. Beneš, P. Čermák, I. Štekl, . et al., "Double Beta Decay of 48Ca in the TGV Experiment", Phys. of Atomic Nuclei, vol. 63, No. 7 (2000) 1218-1221

  • "Experiments TGV I (double-beta decay of 48Ca) and TGV II (double-beta decay of 106Cd and 48Ca)", Czech. Journal of Physics, vol. 50 (2000), No.4, 553-559

  • V. Brudanin, I. Štekl, P. Čermák, A. Kovalík, . et al., "Search for the Double Beta Decay of 48Ca in the TGV Experiment", Phys. Lett. B 495 (1-2) (2000) 63-68

  • I. Štekl, "Measurement of double-beta-decay - experiments TGV and NEMO", Radiation Physics and Chemistry 61 (2001) 309-315

  • P. Čermák, I. Štekl, P. Beneš, V. Brudanin, D. Vénos, . et al., "Distinguishing between electrons and gamma rays in the experiment TGV using a pulse rise time", Czech. Journal of Phys. 52: (4) 583-587, 2002

  • V. Brudanin, P. Beneš, P. Čermák, I. Štekl, A. Kovalík, . et al., "Improved limits on beta- and beta-beta- decays of 48Ca", Pisma v JETP, vol. 76, No.9 (2002) 643-644

  • I. Štekl, P. Čermák, P. Beneš, V. Brudanin, F. Šimkovic, . et al., "Present status of the experiment TGV II", Czech.Journal of Phys. 52: (4) 541-545 (2002)

  • V. Brudanin, I. Štekl, A. Kovalík, . et al., "Search for β- and β-β- decays of 48Ca", Nuclear Physics A700(1-2) (2002) 17-24

  • I. Štekl, P. Beneš, P. Čermák, V. Brudanin, F. Šimkovic, . et al., "First results for the measurement of double-electron capture of 106Cd in the experiment TGV II", Czech.J. Physics 56 (2006) 505-510

  • N. Rukhadze, V. Brudanin, P. Beneš, P. Čermák, I. Štekl, A. Kovalík, . et al., "Search for double electron capture of Cd-106", PHYSICS OF ATOMIC NUCLEI 69 (12): 2117-2123 DEC 2006

  • P. Čermák, P. Beneš, I. Štekl, N. Rukhadze, A. Kovalík, . et al., "The low background spectrometer TGV II for double beta decay measurements", NIM A 569 (2006) 737-742

  • F. Šimkovic, S. Bilenky, A. Faessler, T. Gutsche, "Possibility of measuring the CP Majorana phases in neutrinoless double-beta decay", Phys. Rev. D 87, 073002 (2013)

  • A. Faessler, M. Gonzales, S. Kovalenko, F. Šimkovic, "Arbitrary mass Majorana neutrinos in neutrinoless double beta decay", Phys. Rev. D 90, 096010 (2014)

  • J. Engel, F. Šimkovic, P. Vogel, "Chiral two-body currents and neutrinoless double-β decay in the quasiparticle random-phase approximation", Phys. Rev. C 89, 064308 (2014)

  • S. Kovalenko, M. Krivoruchenko, F. Šimkovic, "Neutrino propagation in nuclear medium and neutrinoless double-beta decay. ", Phys. Rev. Lett. 112, 142503 (2014)
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