Investigation of P-odd correlations in the capture of thermal polarized neutrons involving emission of secondary charged particles (technical issues)

Gledenov, Yu. M.; Okunev, I. S.; Parzhitskii, S. S.; Шульгина, Е. В.; Vesna, V. A.

doi:10.1016/0168-9002(94)91252-1

Cited by 14 publications

(22 citation statements)

References 4 publications

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“…In order to collect >10 16 events for reasonable time and to suppress eventual false effects we used an integral method of the P-odd asymmetry measurement proposed by Lobashev [14,15] and developed in the PNPI [16][17][18]. The experiments were performed using the high intensity polarized cold neutron beam at the PF1B (ILL, Grenoble, France).…”

Section: Experimental Techniquementioning

confidence: 99%

“…Preamplifiers [16] in the detection channels converted currents on the detectors (or on the chamber sections) to electrical voltages, and decomposed a signal into a constant and a variable component. The RC-circuit for the variable component was designed in such a way, that it transmits a signal with the frequency equal to the flipper state switching frequency without any distortions.…”

Section: Experimental Techniquementioning

confidence: 99%

“…The RC-circuit for the variable component was designed in such a way, that it transmits a signal with the frequency equal to the flipper state switching frequency without any distortions. The variable component was amplified K ≈ 30 times and sent to an integrator [16]. A programmable analogto-digital converter read the signals at the integrator output and sent them to the computer.…”

Section: Experimental Techniquementioning

confidence: 99%

“…The compensation coefficient L is calculated for every series of measurements under condition that the variation D α comp of the average value of the effect α comp is minimal. The procedure of data treatment is described in detail in [16,17,21].…”

Section: Experimental Techniquementioning

confidence: 99%

“…Finally, the important part of the integral method is the "0-experiment" with a polarized neutron beam, in which the products of the investigated reaction are not detected, but all other conditions are reproduced as close as possible to conditions of the main measurements [16,21].…”

Section: Experimental Techniquementioning

confidence: 99%

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Parity-violating asymmetry in the reactions 6Li $(n,\alpha)$ 3H and 10B $(n,\alpha)^{7}$ Li* $\rightarrow$ 7Li $+$ $\gamma$

et al. 2011

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We present two experiments measuring the parity-violating asymmetry (P-odd) of tritons emission in the reaction 6 Li(n, α) 3 H and γ -quanta emission in the reaction 10 B(n, α) 7 Li* → 7 Li + γ with polarized cold neutrons, aiming at estimation of the weak meson-nucleon coupling constants. These experiments started in the PNPI, Gatchina and continued in the ILL, Grenoble. We describe an integral method to measure P-odd asymmetry and the two experiments. The results of our measurements are: α 6Li P−odd = (−8.8 ± 2.1) · 10 −8 and α 10B P−odd = (0.8 ± 3.9) · 10 −8 .

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Section: Experimental Techniquementioning

confidence: 99%

Section: Experimental Techniquementioning

confidence: 99%

Section: Experimental Techniquementioning

confidence: 99%

Section: Experimental Techniquementioning

confidence: 99%

Section: Experimental Techniquementioning

confidence: 99%

See 3 more Smart Citations

Parity-violating asymmetry in the reactions 6Li $(n,\alpha)$ 3H and 10B $(n,\alpha)^{7}$ Li* $\rightarrow$ 7Li $+$ $\gamma$

et al. 2011

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Parity-violating asymmetry in the reactions 6Li $(n,\alpha)$ 3H and 10B $(n,\alpha)^{7}$ Li* $\rightarrow$ 7Li $+$ $\gamma$

Vesna¹,

Gledenov²,

Nesvizhevsky³

et al. 2011

Pavi09

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An integral method for measuring the P-odd asymmetry on a reactor at neutron polarization switching frequencies higher than the frequencies of the main spectrum of the neutron noise power

Vesna

Шульгина

2005

Instrum Exp Tech

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P -odd asymmetry is measured when frequencies of switching neutron polarization exceed the frequencies of the reactor power fluctuations that govern the spectral density of noise power. A principle for recording the current signals in these measurements is described. This method was used for the first time at the Konstantinov Institute of Nuclear Physics in Gatchina (Russia). The results suggest that the accuracy of measurements at an increased equipment-switching frequency is even higher than the accuracy obtained using compensation for reactor power fluctuations; hence, this compensation becomes superfluous. Following this method, it is possible to take measurements with a single detector and to dispense with a monitor, thereby rendering the equipment and the measuring technique less complex. A strategy of measurements was developed. An experimental model of the facility was produced and tested with a small-amplitude calibration signal in the presence of reactor power fluctuations caused by γ rays from reaction 10 B( n , α ) 7 Li* ⇒ 7 Li + γ . The results from the test measurements of the ê -odd effect in reaction 35 Cl( n , γ ) 36 Cl are presented.

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Investigation of P-odd correlations in the capture of thermal polarized neutrons involving emission of secondary charged particles (technical issues)

Cited by 14 publications

References 4 publications

Parity-violating asymmetry in the reactions 6Li $(n,\alpha)$ 3H and 10B $(n,\alpha)^{7}$ Li* $\rightarrow$ 7Li $+$ $\gamma$

Parity-violating asymmetry in the reactions 6Li $(n,\alpha)$ 3H and 10B $(n,\alpha)^{7}$ Li* $\rightarrow$ 7Li $+$ $\gamma$

Parity-violating asymmetry in the reactions 6Li $(n,\alpha)$ 3H and 10B $(n,\alpha)^{7}$ Li* $\rightarrow$ 7Li $+$ $\gamma$

An integral method for measuring the P-odd asymmetry on a reactor at neutron polarization switching frequencies higher than the frequencies of the main spectrum of the neutron noise power

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