The proportion of push-pull labor migrants (LC) in the city of Dubna (Moscow region) has been obtained on the basis of microdata for 2001 as well as the industrial composition of their workplaces. ...Results are presented of the assessed shadow wages, comparative analysis is performed of the residents employed in their home town and LC allowing for the age and gender. Dynamics and forecast of LC in Dubna are presented based on the analysis of economic macroindicators for 2001–2006 and the legislative activity of the city government. It is shown that the results obtained on the basis of micro-and macroanalysis are in satisfactory agreement both with each other and with the data of the earlier authors’ macroeconomic studies of LC in the Moscow region 1, 2.
Abstract The full data set of the NEMO-3 experiment has been used to measure the half-life of the two-neutrino double beta decay of $$^{100}$$ 100 Mo to the ground state of $$^{100}$$ 100 Ru, ...$$T_{1/2} = \left 6.81 \pm 0.01\,\left( \text{ stat }\right) ^{+0.38}_{-0.40}\,\left( \text{ syst }\right) \right \times 10^{18}$$ T1/2=6.81±0.01stat-0.40+0.38syst×1018 year. The two-electron energy sum, single electron energy spectra and distribution of the angle between the electrons are presented with an unprecedented statistics of $$5\times 10^5$$ 5×105 events and a signal-to-background ratio of $$\sim $$ ∼ 80. Clear evidence for the Single State Dominance model is found for this nuclear transition. Limits on Majoron emitting neutrinoless double beta decay modes with spectral indices of $$\mathrm{n}=2,3,7$$ n=2,3,7 , as well as constraints on Lorentz invariance violation and on the bosonic neutrino contribution to the two-neutrino double beta decay mode are obtained.
Using 9.4 g of
96Zr isotope and 1221 days of data from the NEMO-3 detector corresponding to 0.031 kg y, the obtained
2
ν
β
β
decay half-life measurement is
T
1
/
2
2
ν
=
2.35
±
0.14
(
stat
)
±
0.16
...(
syst
)
×
10
19
yr
. Different characteristics of the final state electrons have been studied, such as the energy sum, individual electron energy, and angular distribution. The 2
ν nuclear matrix element is extracted using the measured
2
ν
β
β
half-life and is
M
2
ν
=
0.049
±
0.002
. Constraints on
0
ν
β
β
decay have also been set.
Novel NaIL detector (5x6 inch) was investigated for aims of neutron detection in wide energy range. It has been found that the detector together with its known ability to detect the {\gamma}- ...radiation is also allows to distinguish neutron signals in three quasi-independent ways. It sensitive to neutron fluxes on a level down to \(10^{-3}\) \(cm^{-2}\) \(s^{-1}\). In the work intrinsic {\alpha}- background and neutron detection efficiency for the NaIL detector were obtained. Experimental data was compared with results of Geant4 Monte Carlo (MC).
An examination is made of the physicomechanical and processing properties of nanocomposites based on low-density polyethylene and polypropylene. The advantages of introducing organobentonite in the ...form of concentrate are shown, and also the influence of the processing parameters on the properties of the composites obtained.
The detector DANSS is located under n industrial nuclear reactor at Kalininskaya Nuclear Power Plant. This location provides ~ 50 m.w.e. reduction of the cosmic muon flux in the vertical direction, ...which places the experiment in an intermediate position between ground and underground experiments in terms of shielding from the cosmic rays. The detector DANSS is located under an industrial nuclear reactor at Kalininskaya Nuclear Power Plant. This location provides ~50 m.w.e. reduction of the cosmic muon flux in the vertical direction, which places the experiment in an intermediate position between ground and underground experiments in terms of shielding from the cosmic rays. The detector's sensitive area consists of 2500 plastic scintillator counters, each 100x4x1 cm\(^3\) in size, making in total a 1 m\(^3\) volume, which is surrounded by a muon veto system and multiple layers of passive shielding. The main goal of the DANSS experiment is to study the antineutrino spectra at different distances from the source. For this purpose the detector is placed on a lifting platform, and the data is collected at three positions: 10.9 m, 11.9 m and 12.9 m from the center of the reactor core. The detector is capable of reconstructing muon tracks passing though the sensitive volume. In this work the barometric, height and temperature correlation coefficients are calculated in three areas of the zenith angle \(\theta\) using the Duperier approach. These results are based on the muon data collected during four years.
DANSS is a spectrometer of reactor antineutrino based on plastic scintillator. The sensitive volume of the detector is made of 2500 polystyrene based scintillator plates with wavelength shifting ...(WLS) fiber readout (strips). We present a study of the strips light yield during 6.5 years of DANSS continuous running. Overall ageing at the rate \(0.55 \pm 0.05(syst.)\) % per year is observed that is considerably smaller than in other similar experiments. We also observe the WLS fiber attenuation length shortening at the rate \(0.26 \pm 0.04(stat.)\) % per year.
Abstract
The III phase of experiment TGV-2 to search for β
+
β
+
, β+EC, EC/EC decay of
106
Cd was performed at the Modane underground laboratory (LSM, France, 4800 m w.e.). 16 foils (∼23.2 g) of ...enriched
106
Cd were measured using the 32-detector low background HPGe spectrometer TGV-2 during 42500 h. New limit on 2
ν
EC/EC decay of
106
Cd to the ground 0
+
state of
106
Pd - T
1/2
> 7.2 × 10
20
y at 90% C.L was obtained. The limits on 2νβ
+
β
+
, 2νβ+EC decay of
106
Cd, and 2
ν
ECEC decay of
106
Cd to excited states of
106
Pd were significantly improved in comparison with previous phase II of the TGV-2 experiment.
Abstract The NEMO-3 results for the double- $$\beta $$ β decay of $$^{150}$$ 150 Nd to the 0 $$^+_1$$ 1 + and 2 $$^+_1$$ 1 + excited states of $$^{150}$$ 150 Sm are reported. The data recorded during ...5.25 year with 36.6 g of the isotope $$^{150}$$ 150 Nd are used in the analysis. The signal of the $$2\nu \beta \beta $$ 2 ν β β transition to the 0 $$^+_1$$ 1 + excited state is detected with a statistical significance exceeding 5 $$\sigma $$ σ . The half-life is measured to be $$T_{1/2}^{2\nu \beta \beta }(0^+_1) = \left 1.11 ^{+0.19}_{-0.14} \,\left( \hbox {stat}\right) ^{+0.17}_{-0.15}\,\left( \hbox {syst}\right) \right \times 10^{20}$$ T 1 / 2 2 ν β β ( 0 1 + ) = 1 . 11 - 0.14 + 0.19 stat - 0.15 + 0.17 syst × 10 20 year, which is the most precise value that has been measured to date. 90% confidence-level limits are set for the other decay modes. For the $$2\nu \beta \beta $$ 2 ν β β decay to the 2 $$^+_1$$ 1 + level the limit is $$T^{2\nu \beta \beta }_{1/2}(2^+_1) > 2.42 \times 10^{20}~\hbox {year}$$ T 1 / 2 2 ν β β ( 2 1 + ) > 2.42 × 10 20 year . The limits on the $$0\nu \beta \beta $$ 0 ν β β decay to the 0 $$^+_1$$ 1 + and 2 $$^+_1$$ 1 + levels of $$^{150}$$ 150 Sm are significantly improved to $$T_{1/2}^{0\nu \beta \beta }(0^+_1) > 1.36 \times 10^{22}~\hbox {year}$$ T 1 / 2 0 ν β β ( 0 1 + ) > 1.36 × 10 22 year and $$T_{1/2}^{0\nu \beta \beta }(2^+_1) > 1.26 \times 10^{22}~\hbox {year}$$ T 1 / 2 0 ν β β ( 2 1 + ) > 1.26 × 10 22 year .
PDF
