A scattering model describing the interaction between charged particles and a set of rigid neutral atoms was developed to demonstrate that particle theory could predict charged particles diffraction in materials composed of neutral atoms. A ring of gold atoms with a planar distribution of atomic electrons was used as the target. Electrons, positrons, neutrons, anti-neutrons and photons showed theoretical evidence of diffraction. The results of the calculations show signs of Poisson-Arago spot formation with spot not only behind the ring but also in front of it and these spots appeared independently of the projectile charge. This finding agrees with wave and quantum mechanics theory but the fact that a deflection at the edge of a ring of atoms is obtained using classical electrostatics and a quasi-quantum mechanical model for the atomic electrons, indicates that the wave (quantum) theory is not necessary to explain diffraction and if we take into account that the wave theory cannot explain the black body radiation, neither the photoelectric effect and nor the Compton effect, then the particle theory of diffraction is put in a strong solid grounds. Due to the importance of this matter in theoretical physic and gravitation, it is worthy to implement simulating conditions (using full size modeling) to compare the results with experimental data.A scattering model describing the interaction between charged particles and a set of rigid neutral atoms was developed to demonstrate that particle theory could predict charged particles diffraction in materials composed of neutral atoms. A ring of gold atoms with a planar distribution of atomic electrons was used as the target. Electrons, positrons, neutrons, anti-neutrons and photons showed theoretical evidence of diffraction. The results of the calculations show signs of Poisson-Arago spot formation with spot not only behind the ring but also in front of it and these spots appeared independently of the projectile charge. This finding agrees with wave and quantum mechanics theory but the fact that a deflection at the edge of a ring of atoms is obtained using classical electrostatics and a quasi-quantum mechanical model for the atomic electrons, indicates that the wave (quantum) theory is not necessary to explain diffraction and if we take into account that the wave theory cannot explain the black body radiation, neither the photoelectric effect and nor the Compton effect, then the particle theory of diffraction is put in a strong solid grounds. Due to the importance of this matter in theoretical physic and gravitation, it is worthy to implement simulating conditions (using full size modeling) to compare the results with experimental data.

Applied sciences research periodicals.Jul 3, 20260 citations

Cooling and trapping of neutral atoms

Harold J. Metcalf, P. van der Straten

Physics ReportsAug 1, 1994254 citations

Application of Fourier-Fresnel Imaging to Neutral - Atom Interferometry

John F. Clauser

Abstract : This note provides a brief summary of the use of Fourier-Fresnel imaging to neutral atom interferometry. In applications of neutral-atom interferometry not requiring the interferometer to have an open (multiply connected) topology, the use of this imaging has significant advantages, notably ease of alignment, significantly increased through-put flux, ability to work with very short wavelength (and/or high velocity atoms). The results are primarily interesting in that they span the boundary between trapezoidal moire fringes and sinusoidal wave-interference fringes. Their limited applicability, perhaps accounts for the relative obscurity of many of the results to typical curricula of modern-day optics. The emphasis in this note is thus to put existing results (along with some additions that are needed for clarity) in a form suitable for use by techniques available for neutral-atom interferometry.Abstract : This note provides a brief summary of the use of Fourier-Fresnel imaging to neutral atom interferometry. In applications of neutral-atom interferometry not requiring the interferometer to have an open (multiply connected) topology, the use of this imaging has significant advantages, notably ease of alignment, significantly increased through-put flux, ability to work with very short wavelength (and/or high velocity atoms). The results are primarily interesting in that they span the boundary between trapezoidal moire fringes and sinusoidal wave-interference fringes. Their limited applicability, perhaps accounts for the relative obscurity of many of the results to typical curricula of modern-day optics. The emphasis in this note is thus to put existing results (along with some additions that are needed for clarity) in a form suitable for use by techniques available for neutral-atom interferometry.

UnknowOct 3, 19900 citations

Interfering and entangling single neutral atoms

Cindy A. Regal

Bulletin of the American Physical SocietyJun 10, 20150 citations

Probing a Singular Potential with Cold Atoms: A Neutral Atom and a Charged Wire

Johannes Hecker Denschlag, Gerhard Umshaus, Jörg Schmiedmayer

By charging a thin wire we realize a pure attractive $1/{r}^{2}$ potential of variable strength for cold neutral atoms. Scattering experiments are performed where the charged wire is placed inside a confined gas of cold lithium atoms. We observe the ``falling'' of atoms into the $1/{r}^{2}$ singularity which so far has been only theoretically discussed in textbooks.By charging a thin wire we realize a pure attractive $1/{r}^{2}$ potential of variable strength for cold neutral atoms. Scattering experiments are performed where the charged wire is placed inside a confined gas of cold lithium atoms. We observe the ``falling'' of atoms into the $1/{r}^{2}$ singularity which so far has been only theoretically discussed in textbooks.

Physical Review LettersJul 27, 1998108 citations

By charging a thin wire we realize a pure attractive

1/{r}^{2}

potential of variable strength for cold neutral atoms. Scattering experiments are performed where the charged wire is placed inside a confined gas of cold lithium atoms. We observe the ``falling'' of atoms into the

1/{r}^{2}

singularity which so far has been only theoretically discussed in textbooks.