Распределение Радона И Рак Легких В Отдельных Районах Западной Грузии

Quantitative assessment of radon distribution in several regions of West Georgia has been carried out. According to field data in more than 100 water samples there is high content of radon. This research once again confirms correlation between Rn exhalation and prevalence of lung cancerПроведены количественные исследования распределения радона в отдельных районах Западной Грузии. Полученные данные свидетельствуют, что в более чем 100 пробах воды отмечается повышенное содержание радона. В тех же местах наблюдается повышенная концентрация радона в жилищах. Данное исследование еще раз подтверждает связь между концентрацией радона и распространением рака легкого.ჩატარებულია რადონის განაწილების რაოდენობრივი შეფასება დასავლეთ საქართველოს ცალკეულ რაიონებში. მიღებული მონაცემები მოწმობს, რომ 100-ზე მეტი წყლის სინჯში აღინიშნება რადონის მაღალი შემცველობა. ამ უბნებთანაა დაკავშირებული ბინებში Rn დაგროვების მაღალი მაჩვენებლები. ჩვენს მიერ ჩატარებული კვლევა კიდევ ერთხელ ადასტურებს კორელაციურ კავშირს რადონის კონცენტრაციასა და ფილტვის კიბოს გავრცელებას შორის

დასავლეთ საქართველოს სხვადასხვა რაიონში ნიადაგში და წყალში რადონის შემცველობის კვლევის წინასწარი შედეგები

ნიადაგში და წყალში რადონის შემცველობის განმეორადობა დამაკმაყოფილებლად აღიწერება ექსპონენციური დამოკიდებულებით. ნიადაგში და წყალში რადონის შემცველობას შორის არსებობს პირდაპირი კორელაციური დამოკიდებულება. საკვლევი ტერიტორიის 12 % მიეკუთვნება მაღალი რადონის შემცველ კატეგორიას. გამოკვლეული ჭების 4%-ზე მეტში დაფიქსირებულია წყალში რადონის მაღალი მნიშვნელობები

Antiproton-proton scattering experiments with polarization.

High Energy Physics Esperiment (hep-ex/0505054). The document describes the physics case of the PAX experiment using polarized antiprotons, which has recently been proposed for the new Facility for Antiprotons and Ions Research (FAIR) at GSI--Darmstadt. Polarized antiprotons provide access to a wealth of single-- and double--spin observables, thereby opening a new window to physics uniquely accessible at the HESR. The polarized antiprotons would be most efficiently produced by spin--filtering in a dedicated Antiproton Polarizer Ring (APR) using an internal polarized hydrogen gas target. In the proposed collider scenario of the PAX experiment, polarized protons stored in a COSY--like Cooler Storage Ring (CSR) up to momenta of 3.5 GeV/c are bombarded head--on with 15 GeV/c polarized antiprotons stored in the HESR. This asymmetric double--polarized antiproton--proton collider is ideally suited to map, e.g., the transversity distribution in the proton. The proposed detector consists of a large--angle apparatus optimized for the detection of Drell--Yan electron pair

"Measurement of the spin-dependence of p-pbar interaction at AD-ring”

Letter of Intent to the CERN SPS Comitee. An internal polarized hydrogen storage cell gas target is proposed for the AD--ring to determine for the first time the two total spin--dependent cross sections $\sigma_1$ and $\sigma_2$ at antiproton beam energies in the range from 50 to 200 MeV. The data will allow the definition of the optimum working parameters of a dedicated Antiproton Polarizer Ring (APR), which has recently been proposed by the PAX collaboration for the new Facility for Antiproton and Ion Research (FAIR) at GSI in Darmstadt, Germany. The availability of an intense beam of polarized antiprotons will provide access to a wealth of single-- and double--spin observables, thereby opening a new window to QCD transverse spin physics. The physics program proposed by the PAX collaboration includes a first measurement of the transversity distribution of the valence quarks in the proton, a test of the predicted opposite sign of the Sivers--function, related to the quark distribution inside a transversely polarized nucleon, in Drell--Yan (DY) as compared to semi--inclusive Deep Inelastic Scattering, and a first measurement of the moduli and the relative phase of the time--like electric and magnetic form factors $G_{E,M}$ of the proton

Antiproton-proton scattering experiment with polarization (update)

Upgrading to the document High Energy Physics Esperiment (hep-ex/0505054). The document describes the physics case of the PAX experiment using polarized antiprotons, which has recently been proposed for the new Facility for Antiprotons and Ions Research (FAIR) at GSI--Darmstadt. Polarized antiprotons provide access to a wealth of single-- and double--spin observables, thereby opening a new window to physics uniquely accessible at the HESR. The polarized antiprotons would be most efficiently produced by spin--filtering in a dedicated Antiproton Polarizer Ring (APR) using an internal polarized hydrogen gas target. In the proposed collider scenario of the PAX experiment, polarized protons stored in a COSY--like Cooler Storage Ring (CSR) up to momenta of 3.5 GeV/c are bombarded head--on with 15 GeV/c polarized antiprotons stored in the HESR. This asymmetric double--polarized antiproton--proton collider is ideally suited to map, e.g., the transversity distribution in the proton. The proposed detector consists of a large--angle apparatus optimized for the detection of Drell--Yan electron pair

COMET Phase-I Technical Design Report

International audienceThe Technical Design for the COMET Phase-I experiment is presented in this paper. COMET is an experiment at J-PARC, Japan, which will search for neutrinoless conversion of muons into electrons in the field of an aluminum nucleus (⁠|$\mu$|–|$e$| conversion, |$\mu^{-}N \rightarrow e^{-}N$|⁠); a lepton flavor-violating process. The experimental sensitivity goal for this process in the Phase-I experiment is |$3.1\times10^{-15}$|⁠, or 90% upper limit of a branching ratio of |$7\times 10^{-15}$|⁠, which is a factor of 100 improvement over the existing limit. The expected number of background events is 0.032. To achieve the target sensitivity and background level, the 3.2 kW 8 GeV proton beam from J-PARC will be used. Two types of detectors, CyDet and StrECAL, will be used for detecting the |$\mu$|–|$e$| conversion events, and for measuring the beam-related background events in view of the Phase-II experiment, respectively. Results from simulation on signal and background estimations are also described