THEME05-2-1039-2001/2006

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05-2-1039-2001/2006

Priority:

Status:

Extended

Investigation of Fundamental Interactions in Nuclei
at Low Energies

Leader:

V.B. Brudanin

Scientific Programme:
Investigation of electron-neutrino angular correlation in nuclear

-decay aimed to obtain new experimental upper limits for the admixture of scalar and tensor interactions to the standard V-A model. Search for neutrinoless double beta decay and wide investigation of two-neutrino

-decay of ¹⁰⁰Mo, ¹⁵⁰Nd, ¹⁰⁶Cd, ⁴⁸Ca, ⁷⁶Ge, and other isotopes in the international experiments NEMO, TGV. Quantitative estimation of new physics phenomena (Supersymmetry, Compositeness, Lepto-quarks, etc.) in cosmology, accelerator physics and rare decays. Investigation of weak and electomagnet properties of neutrons.
Research and development of new cryogenic methods of detection to search for Weak Interacting Massive Particles as candidates for non-baryonic Dark Matter in the Universe. Research and development of new types of semiconductor germanium detectors for future generation of non-accelerator experiments within the framework of the GENIUS and MAJORANA projects. Nuclear spectroscopy of nuclei far from stability; investigation of

- and

-decay aimed to obtain new information of nuclear properties such as bounding energies, masses, coupling energies, etc. Investigation of interactions of light nuclei at astrophysical energies with plasma accelerators. Development of diagnostics methods for the dynamics of the dense plasma fluxes. Development of new radiochemical methods for extraction of rare nuclides and new types of scintillators. Creation of the experimental setup and investigation of dd, pd and d ³He reactions at ultralow energies by using a Z-pinch.

Expected main results in 2004:

Creation of the shielding against Radon contamination for spectrometer NEMO.
Data taking in 2 0 - and 2 2 - decay measurements with ¹⁰⁰Mo, ⁴⁸Ca, ¹⁰⁶Gd, ¹¹⁶Gd, ⁸²Se, ¹⁵⁰Nd and ⁹⁶Zn nuclei with NEMO and TGV setups.
Measurements of electron-neutrino corelations in decay of ³²Ar.
Investigations of the Si and Ge detector behaviour at ultra-low temperature (less than 4.2K). Preparation of the cryogenic system for detectors with inner amplification and measurements with Si-based detectors.
Test data taking in DM-GTF experiments.
R&D of the semiconductor-based detecting systems for GENIUS and MAJORANA experiments.
Methodological investigations on updating the "target-ion-source" unit to increase the yield of short-lived isotopes.
Preparations for manufacturing of radioactive sources. Physical and chemical investigations of rare earth elements by means of the one-detector angular correlation due to gamma-gamma excitation. Development of methods of time spectroscopy on the basis of the scintillator "mini-ball" setup for on-line experiments.
Investigation of the isomery and the excited state structure of the strongly-deformed rare-earth nuclei Tm and Ho aimed at the verification of the Gallagher-Moshkovsky law.
Development and construction of the method for diagnostics of the liner plasma in inverse Z-pinch configuration on the basis of the accelerated ion detectors and of the optical plasma radiation.

List of Activities

Activity or project

Spokespersons

Status

NEMO

V.B. Brudanin
O.I. Kochetov
A.A. Smolnikov

Data taking

TGV

N.I. Rukhadze
I. Stekl

Data taking

ANCOR

V.G. Egorov

Data taking

DETECTOR

V.G. Sandukovsky
V.B. Brudanin

Data taking

DM-GTF

V.A. Bednyakov

Data taking

YASNAPP

V.G. Kalinnikov

Data taking

LESI

V.M. Bystritsky

Data taking

Collaboration
Country or international organization	City	Institute or Laboratory
Armenia	Yerevan	YSU
Belarus	Minsk	NC PHEP BSU
		RINP BSU
Belgium	Leuven	K.U.Leuven
Bulgaria	Sofia	INRNE BAS
		SU
	Plovdiv	UP
Czech Republic	Prague	CTU
	Rez	NRI
Finland	Helsinki	SEFT
	Jyvaskyla	UJ
France	Orsay	CSNSM
		LAL
Germany	Halle	MLU
	Heidelberg	MPI-K
	Mainz	JGU
	Tubingen	Univ.
Mongolia	Ulaanbaatar	NUM
Poland	Cracow	NINP
		IP JU
		FPNT UMM
	Lublin	IP MCSU
	Warsaw	SINS
Romania	Bucharest	IFIN - HH
		UB
Russia	Gatchina	PNPI RAS
	Voronezh	VSU
	Moscow	SSC RRC KI
		MEPhI
		PFUR
		SSC-ITEP
		SINP MSU
		MSU
		"INTRA"
	Troitsk	INR RAS
	St. Petersburg	KRI
		SPbSU
		IPTI RAS
	Sarov	RFNC-VNIIEF
	Tomsk	RINP TPU
		IHCE SB RAS
	Yekaterinburg	IEP UD RAS
Slovak Republic	Bratislava	CU
Spain	Valencia	UV
Sweden	Uppsala	UU
Ukraine	Kiev	INR SC NASU
The USA	Durham, NC	Duke
	Gainesville, FL	UF
	Irvine, CA	UCIrvine
	Livermore, CA	LLNL
Uzbekistan	Tashkent	INP UAS
		IAP NUU
		NUU
	Samarkand	SSU

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Investigation of Fundamental Interactions in Nuclei at Low Energies

Investigation of Fundamental Interactions in Nuclei
at Low Energies