Zobrazeno 1 - 10
of 813
pro vyhledávání: '"TOENNIES, J. P."'
Publikováno v:
J. Phys. Chem. Lett. 9 (2018) 76
He atom scattering has been shown to be a sensitive probe of electron-phonon interaction properties at surfaces. Here it is shown that measurements of the thermal attenuation of the specular He atom diffraction peak (the Debye-Waller effect) can dete
Externí odkaz:
http://arxiv.org/abs/1712.06275
We review the work and life of Otto Stern who developed the molecular beam technique and with its aid laid the foundations of experimental atomic physics. Among the key results of his research are: the experimental determination of the Maxwell-Boltzm
Externí odkaz:
http://arxiv.org/abs/1109.4864
A quantum mechanical coupled-channel scattering calculation on the Stark-Werner potential energy surface is used to study the F + H2(v=0; j=0,1,2) ---> H + HF(v', j') reaction at collision energies of 1.84, 2.74, and 3.42 kcal/mol. The dependence of
Externí odkaz:
http://arxiv.org/abs/1009.1578
Publikováno v:
Phys. Rev. Lett. 2007, 98, 183401
The interplay between magic number stabilities and superfluidity of small para-hydrogen clusters with sizes $N = 5$ to 40 and temperatures $0.5 K \leq T \leq 4.5 $K is explored with classical and quantum Path Integral Monte Carlo calculations. Cluste
Externí odkaz:
http://arxiv.org/abs/physics/0612161
Publikováno v:
Phys. Rev. Lett. 95, 063002 (2005)
The size of the helium trimer is determined by diffracting a beam of He-4 clusters from a 100 nm grating inclined by 21 degree. Due to the bar thickness the projected slit width is roughly halved to 27 nm, increasing the sensitivity to the trimer siz
Externí odkaz:
http://arxiv.org/abs/quant-ph/0412064
The particle flux through a two micron diameter orifice into vacuum from a source chamber filled with solid He exhibits a striking periodic behavior similar to that of a geyser. This phenomenon is attributed to a periodic collapse of the solid inside
Externí odkaz:
http://arxiv.org/abs/cond-mat/0403642
Autor:
Bruehl, Ruediger, Fouquet, Peter, Grisenti, Robert E., Toennies, J. Peter, Hegerfeldt, ; Gerhard C., Koehler, Thorsten, Stoll, Martin, Walter, Christian
Highly polarizable metastable He* ($\mathrm{2^3S}$) and Ne* ($\mathrm{2^3P}$) atoms have been diffracted from a 100 nm period silicon nitride transmission grating and the van der Waals coefficients $C_3$ for the interaction of the excited atoms with
Externí odkaz:
http://arxiv.org/abs/quant-ph/0112173
Autor:
Siber, A., Gumhalter, B., Braun, J., Graham, A. P., Bertino, M. F., Toennies, J. P., Fuhrmann, D., Wöll, Ch.
Publikováno v:
A. Siber, B. Gumhalter, J. Braun, A.P. Graham, M.F. Bertino, J.P. Toennies, D. Fuhrmann and Ch. Woll, Phys. Rev. B 59(8), 5898 (1999)
The surface phonon dispersion curves of commensurate Xe monolayers on Cu(111) and incommensurate Xe monolayers on Cu(001) surfaces have been measured using He atom scattering (HAS) time of flight (TOF) spectroscopy. The TOF spectra are interpreted by
Externí odkaz:
http://arxiv.org/abs/cond-mat/0001102
Publikováno v:
B. Gumhalter, A. Siber and J.P. Toennies, Phys. Rev. Lett. 83, 1375 (1999)
Nonperturbative expressions are derived for the angular resolved energy transfer spectra in the quantum regime of multiphonon scattering of inert gas atoms from surfaces. Application to He atom scattering from a prototype heatbath Xe/Cu(111) shows go
Externí odkaz:
http://arxiv.org/abs/cond-mat/9909422
Publikováno v:
A. Siber, B. Gumhalter, J.P. Toennies, Vacuum 54, 315
Recently developed quantum mechanical theory of inelastic He atom scattering (HAS) from solid surfaces is employed to analyze the energy transfer between projectile particles (thermal energy He-atoms) and vibrational degrees of freedom (phonons) char
Externí odkaz:
http://arxiv.org/abs/cond-mat/9909421