We have measured the scattering angle dependence of cross sections for ionization in p+H2 collisions for a fixed projectile energy loss. Depending on the projectile coherence, interference due to indistinguishable diffraction of the projectile from the two atomic centers was either present or absent in the data. This shows that, due to the fundamentals of quantum mechanics, the preparation of the beam must be included in theoretical calculations. The results have far-reaching implications on formal atomic scattering theory because this critical aspect has been overlooked for several decades.
K. N. Egodapitiya et al., "Manipulating Atomic Fragmentation Processes by Controlling the Projectile Coherence," Physical Review Letters, vol. 106, no. 15, pp. 153202-1-153202-4, American Physical Society (APS), Apr 2011.
The definitive version is available at http://dx.doi.org/10.1103/PhysRevLett.106.153202
Keywords and Phrases
Atomic centers; Atomic scattering; Cross section; Fragmentation process; Projectile energy; Scattering angles; Theoretical calculations; Atoms; Energy dissipation; Projectiles; Quantum theory; Coherent scattering
International Standard Serial Number (ISSN)
Article - Journal
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