Results 131 to 140 of about 14,870 (193)

Controlling soliton interactions in Bose-Einstein condensates by synchronizing the Feshbach resonance and harmonic trap

, 2008
We present how to control interactions between solitons, either bright or dark, in Bose-Einstein condensates by synchronizing Feshbach resonance and harmonic trap.
Chen, X. Z., Liu, W. M., Yang, Qin, Zhang, Jie-Fang, Zhang, Xiao-Fei   +4 more
core   +1 more source

Radiative neutron capture: Hauser Feshbach vs. statistical resonances

Physics Letters B, 2017
AbstractThe radiative neutron capture rates for isotopes of astrophysical interest are commonly calculated on the basis of the statistical Hauser Feshbach (HF) reaction model, leading to smooth and monotonically varying temperature-dependent Maxwellian-averaged cross sections (MACS). The HF approximation is known to be valid if the number of resonances
Rochman, Dimitri, Goriely, Stéphane, Koning, Arjan J., Ferroukhi, H.   +3 more
openaire   +4 more sources

Phase separation and collapse in Bose-Fermi mixtures with a Feshbach resonance

, 2008
We consider a mixture of single-component bosonic and fermionic atoms with an interspecies interaction that is varied using a Feshbach resonance. By performing a mean-field analysis of a two-channel model, which describes both narrow and broad Feshbach ...
Charles J. M. Mathy, David A. Huse, Francesca M. Marchetti, H. Yabu, Meera M. Parish   +4 more
core   +1 more source

Collisional stability of fermionic Feshbach molecules

, 2008
Using a Feshbach resonance, we create ultracold fermionic molecules starting from a Bose-Fermi atom gas mixture. The resulting mixture of atoms and weakly bound molecules provides a rich system for studying few-body collisions because of the variety of ...
D'Incao, J. P., Jin, D. S., Ni, K. -K., Ospelkaus, S., Wieman, C. E., Ye, J., Zirbel, J. J.   +6 more
core   +1 more source

Measurement of the Zero Crossing in a Feshbach Resonance of Fermionic 6-Li

, 2002
We measure a zero crossing in the scattering length of a mixture of the two lowest hyperfine states of 6-Li. To locate the zero crossing, we monitor the decrease in temperature and atom number arising from evaporation in a CO2 laser trap as a function of
A.G. Truscott, B. DeMarco, C. J. Williams, C. Linton, C. Samuelis, E. Tiesinga, E. Tiesinga, E. Timmermans, E.R.I. Abraham, F. Schreck, F.A. van Abeelen, J. E. Thomas, K. M. O’Hara, K.M. O’Hara, K.M. O’Hara, M. E. Gehm, M. Holland, M. Houbiers, R. Côté, S. Kokkelmans, S. L. Hemmer, S. R. Granade, S.R. Granade, T. Loftus, V. Venturi, Z. Hadzibabic, Z.-C. Yan   +26 more
core   +1 more source

Recent experimental results on level densities for compound reaction calculations

EPJ Web of Conferences, 2012
Proton evaporation spectra from 6,7Li induced reactions on 54,56,58Fe nuclei have been measured and analyzed with Hauser-Feshbach compound reaction calculations with a Gilbert and Cameron input level density model.
Schiller A., Massey T., Brune C.R., Grimes S.M., Voinov A.V.   +4 more
doaj   +1 more source

Feshbach enhanced s-wave scattering of fermions: direct observation with optimized absorption imaging

New Journal of Physics, 2015
We directly measured the normalized s -wave scattering cross-section of ultracold ^40 K atoms across a magnetic-field Feshbach resonance by colliding pairs of degenerate Fermi gases (DFGs) and imaging the scattered atoms.
D Genkina, L M Aycock, B K Stuhl, H-I Lu, R A Williams, I B Spielman   +5 more
doaj   +1 more source

A quantum engine in the BEC-BCS crossover. [PDF]

Nature, 2023
Koch J, Menon K, Cuestas E, Barbosa S, Lutz E, Fogarty T, Busch T, Widera A.   +7 more
europepmc   +1 more source

Attosecond photoionization delays in the vicinity of molecular Feshbach resonances. [PDF]

Sci Adv, 2023
Borràs VJ, González-Vázquez J, Argenti L, Martín F.   +3 more
europepmc   +1 more source

Emergence of charm-strange dibaryons with negative parity via baryon–baryon interactions

European Physical Journal C: Particles and Fields
Within the framework of the one-boson-exchange model, we systematically perform a coupled channel analysis of the $$P-$$ P - wave interactions between a charm baryon and light baryon, the involved channels include $$\Xi _cN$$ Ξ c N , $$\Lambda _c\Sigma $$
Yu-Yue Cui, Xiao-Mei Tang, Qi Huang, Rui Chen   +3 more
doaj   +1 more source