Nucleon deformation and atomic spectroscopy

Nucleon Deformation and Atomic Spectroscopy

Recent ineleastic electron-proton scattering experiments have led to rather accurate values for the N → ∆ transition quadrupole moment Q N →∆. The experimental results imply a prolate (cigar-shaped) intrinsic deformation of the nucleon. The nonsphericity of the proton's charge distribution might be seen in the spectrum of atomic hydrogen. The possibilities and limitations for determining the ge...

Indirect Determination of Ascorbic Acid by Atomic Absorption Spectroscopy

A new and simple method followed by atomic absorption spectrometry has been developedfor indirect determination of ascorbic acid (AA). The proposed method was based on the oxidationof AA to dehydroascorbic acid with Cu2+cation(200mgL-1)in an ammonium thiocyanatesolution atpH2.4. AA reduces Cu2+to Cu+followed by the precipitation of Cu+ with SCN-. Then, the excess ofCu2+in the solution was measu...

Neutron Charge Form Factor and Quadrupole Deformation of the Nucleon∗

A quark model relation between the neutron charge form factor and the N → ∆ charge quadrupole form factor is used to predict the C2/M1 ratio in the N → ∆ transition from the elastic neutron form factor data. Excellent agreement with the electro-pionproduction data is found, indicating the validity of the suggested relation. The implication of the negative C2/M1 ratio for the intrinsic deformati...

Atomic spectroscopy: a review.

Active Stark Atomic Spectroscopy

Active Stark Atomic Spectroscopy (ASAS) method can be used to determine the electric field in the diode of an ion or electron accelerator as a function of position and time, including the positions of anode and cathode plasma emission surfaces (in order to obtain the effective accelerating gap). As possible probe beams, we suggest the use of lithium and sodium atoms. The diagnostic provides a m...