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- Adlarson, Patrik, et al.
(författare)
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Abashian-Booth-Crowe Effect in Basic Double-Pionic Fusion : A New Resonance?
- 2011
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Ingår i: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 106:24, s. 242302-
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Tidskriftsartikel (refereegranskat)abstract
- We report on an exclusive and kinematically complete high-statistics measurement of the basic double-pionic fusion reaction pn -> d pi(0)pi(0) over the full energy region of the ABC effect, a pronounced low-mass enhancement in the pi pi-invariant mass spectrum. The measurements, which cover also the transition region to the conventional t- channel Delta Delta process, were performed with the upgraded WASA detector setup at COSY. The data reveal the Abashian-Booth-Crowe effect to be uniquely correlated with a Lorentzian energy dependence in the integral cross section. The observables are consistent with a narrow resonance with m = 2.37 GeV, Gamma approximate to 70 MeV and I(J(P)) = 0(3(+)) in both pn and Delta Delta systems. Necessary further tests of the resonance interpretation are discussed.
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- Vannikov, A. V., et al.
(författare)
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Photoelectric, nonlinear optical and photorefractive properties of polymer/carbon nanotube composites
- 2011
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Ingår i: Carbon. - : Elsevier BV. - 0008-6223. ; 49:1, s. 311-319
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Tidskriftsartikel (refereegranskat)abstract
- Photoelectric and photorefractive properties at 1064 nm and 1550 nm and also nonlinear optical and electron-transport characteristics were investigated in polyvinylcarbazole (PVK) and aromatic polyimide (API) layers containing closed non-oxidized and oxidized single wall (SW) and also multi-wall (MW) carbon nanotubes (CNTs). Analysis of the nonlinear optical properties for polymer composites containing 0.26 wt.% SWCNTs showed very high third-order susceptibility (1.85 ± 0.35 × 10 -10 esu). This enabled us to use the unplasticized polymers having a glass transition temperature above 200 °C in photorefractive cells. © 2010 Elsevier Ltd. All rights reserved.
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