IEAP - Institute of Experimental and Applied Physics

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 T_1/2 ≥ 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

Čermák Pavel

IEAP

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)

Articles in Conference Proceedings
(1)

Thesis
(2)

Other publications
(0)

All
(22)

Table format

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)

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)

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

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

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