Hasil untuk "physics.atom-ph"

Berthold-Georg Englert

Majorana found a way to exploit the scaling properties of the Thomas-Fermi equation for converting this second-order differential equation into one of first order. We explore his method for the familiar neutral-atom solution and extend it to the solution that is relevant for weakly ionized atoms. Various integrals and other quantities with importance for atomic physics are recalculated and their values compared with the ones obtained in the 1980s by more tedious numerical procedures.

Xuan-Qian Bao, Xue-Dong Tian, Dong-Xiao Li et al.

We propose a theoretical scheme for dipole exchange-induced grating (DEIG) based on a hybrid system consisting of ultra-cold Rubidium ($^{87}$Rb) atomic ensemble and movable Rydberg spin atoms. The optical response of the grating appears as a superposition of three- and four-level configurations, similar to the cooperative optical nonlinear effect caused by the dipole blockade effect. However, such Rydberg atomic grating uniquely responds to the spatial positions of spin atoms, offering a novel approach to dynamically control electromagnetically induced gratings (EIG) except for input probe intensity.

B. Weusten, J. Roelofs, L. Akkermans et al.

Kangtaek Lee, S. Asher

J. Whalen, Chi Chang, G. Clayton et al.

Z. Meng, A. Wolberg, D. Monroe et al.

Sang-Eun Oh, Steven W. van Ginkel, B. Logan

Mingchun Zhao, M. Liu, G. Song et al.

E. Ajandouz, L. Tchiakpe, F. Oré et al.

G. Rudenko, L. Henry, K. Henderson et al.

M. Qiao, D. L. Fletcher, D. P. Smith et al.

The relationship between broiler breast meat color and pH, moisture content, water-holding capacity (WHC), and emulsification capacity (EC) was investigated. In each of three replicate trials, fillets were collected from three different commercial processing plants according to breast meat lightness (L*) values as follows: lighter than normal (light, L* > 53), normal (48 < L* < 53), and darker than normal (dark, L* < 46). Color values of lightness (L*), redness (a*), and yellowness (b*) were measured at 0 and 24 h after collection. Fillets were then ground and homogenized prior to determining color, pH, moisture, WHC, and EC of the ground meat. There was a significant difference among the three color groups (light, normal, and dark) in L*, a*, pH, WHC, and EC. The L* values of whole raw breast fillets had significant negative correlation coefficients with ground meat EC (-0.9237), pH (-0.9610), and a* (-0.6540). Emulsification capacity had significant positive correlations with pH (0.9572) and water-holding capacity (0.7080). WHC had significant correlations with a* (0.8143), moisture (-0.7647), and pH (0.7963). Lighter-than-normal meat was associated with low pH, high moisture, low EC, and low WHC. These results indicate that wide differences in raw breast meat color exist and that these differences may be used by poultry further processors as an indicator of fillets with altered functional properties.

N. Nelson, R. Mikkelsen, D. Hesterberg

Qing Yang, Shichao Wang, Peiwei Fan et al.

Rui-Hua Xu, Xu Wang, J. H. Eberly

We extend our earlier "virtual detector" method [X. Wang, J. Tian, and J. H. Eberly, Phys. Rev. Lett. 110, 243001 (2013)], a hybrid quantum mechanical and classical trajectory method, to include phases in the classical trajectories. Effects of quantum interferences, lost in the earlier method, are restored. The obtained photoelectron momentum distributions agree well with the corresponding numerical solutions of the time-dependent Schrödinger equation.

Dilleys Ferreira, Romain Bachelard, William Guerin et al.

The Siegert relation relates the electric field and intensity correlations of light, under given assumptions. After a brief history of intensity correlations, we give a derivation of the relation. Then we present an experiment, which can be easily adapted for an undergraduate setup, and that allows measuring both field and intensity correlations at the same time, thus providing a direct test of the Siegert relation. As a conclusion, we discuss typical situations where the relation fails.

A. Park, L. Fan

A. Pol, K. Heijmans, H. Harhangi et al.

D. Bhumkar, V. Pokharkar

M. Gilar, Petra Olivova, Amy E Daly et al.

S. Roche, S. Bressanelli, F. Rey et al.