1 Peering into the protonProton spin is currently thought to be made up of a combination of the spins of valence quarks (three central globes), sea quarks (smaller pairs of globes) and gluons (yellow), and their possible orbital motion (white). (Courtesy: Brookhaven National Laboratory) Such...
I will also point out the future opportunities in understanding the proton spin. 2007 American Institute of PhysicsXiangdongDepartmentJiDepartmentAIP Conference ProceedingsX. Ji: The Spin of the Proton: Looking Back and Looking Forward. AIP Conf Proc. 915 , 16–21 (2007); and Generalized Parton ...
Spin–isospin excitation of the $${}^3$$He nucleus by a proton-induced charge exchange reaction, $${}^3\mathrm{He}(p,n)ppp$$, at forward neutron scattering angle is studied in a plane wave impulse approximation (PWIA). In PWIA, cross sections of the reaction are written in terms ...
The electron spin resonance spectra of the biphenylene cation and anion and the binaphthylene anion are described. The proton hyperfine splitting constants for the ions derived from biphenylene are in good agreement with predictions base... A Carrington,J Dos Santos-Veiga - 《Molecular Physics》 被...
Define isospin. isospin synonyms, isospin pronunciation, isospin translation, English dictionary definition of isospin. n. Abbr. I A quantum number related to the number of charge states of a baryon or meson. American Heritage® Dictionary of the Engli
"hydroxylamine anion/oxoammonium cation"; tautomerization of the oxoammonium cation, with concomitant release of a proton, leads to the formation of a new nitrone (Fig. 4; reviewed in ref. 34). One strategy to increase the kinetic stability of spin-adducts containing α-H atoms is to...
proton of axial 2-MeHIm is removed. Interestingly, various spectroscopies including EPR and XAFS determine a high-spin state (S = 3/2) for the imidazolate derivatives, in contrast to the low-spin state (S = 1/2) of all known imidazole analogs. DFT assisted stereoelectronic ...
Intramolecular electric field effect on a 1J(C,H) NMR spin–spin coupling constant. an experimental and theoretical study An experimental study of the effects of intramolecular electric fields on 1J(C,H) coupling constants involving a formyl proton in a series of 5-X-salicylal... DGD Kowalewsk...
13C proton decoupled cross-polarization magic-angle spinning nmr spectra of lysozyme are reported as a function of hydration. Increases in hydration level ... RB Gregory,M Gangoda,RK Gilpin,... - 《Biopolymers》 被引量: 146发表: 1993年 Random-lattice models and simulation algorithms for the ...
The catalytic activities are generally believed to be relevant to the electronic states of their active center, but understanding this relationship is usua