Determination of the Binding Energy of He2+ from Ion Scattering Data

In 2012, preliminary guidelines were published addressing sample quality, data acquisition and reduction, presentation of scattering data and validation, and modelling for biomolecular small-angle scattering (SAS) experiments. Biomolecular SAS has since continued to grow and authors have increasingly adopted the preliminary guidelines. In parallel, integrative/hybrid determination of biomolecular structures is a rapidly growing field that is expanding the scope of structural biology. For SAS to contribute maximally to this field, it is essential to ensure open access to the information required for evaluation of the quality of SAS samples and data, as well as the validity of SAS-based structural models. To this end, the preliminary guidelines for data presentation in a publication are reviewed and updated, and the deposition of data and associated models in a public archive is recommended. These guidelines and recommendations have been prepared in consultation with the members of the International Union of Crystallography (IUCr) Small-Angle Scattering and Journals Commissions, the Worldwide Protein Data Bank (wwPDB) Small-Angle Scattering Validation Task Force and additional experts in the field.

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Structure Determination of the Nisi2(111) Surface Using Medium Energy Ion Scattering with Monolayer Resolution

MRS Proceedings ◽

10.1557/proc-202-321 ◽

1990 ◽

Vol 202 ◽

Author(s):

J. Vrijmoeth ◽

P.M. Zagwijn ◽

J.W.M. Frenken ◽

J.F. van der Veen

Keyword(s):

Surface Structure ◽

Structure Determination ◽

New Method ◽

Medium Energy ◽

Ion Scattering ◽

Triple Layer ◽

Medium Energy Ion Scattering

ABSTRACTThe surface structure of epitaxial NiSi2 films grown on Si (111) has been determined using a new method. The backscattering signals from subsequent Ni layers in the NiSi2 (111) surface are resolved.The topology of the NiSi2 (111) surface is concluded to be bulklike, i.e., it is terminated by a Si – Ni – Si triple layer.

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Calculation of nuclear energies and stability by the statistical method

Proceedings of the Royal Society of London Series A - Mathematical and Physical Sciences ◽

10.1098/rspa.1940.0037 ◽

1940 ◽

Vol 174 (959) ◽

pp. 523-545 ◽

Cited By ~ 2

Keyword(s):

Statistical Theory ◽

Binding Energy ◽

Statistical Method ◽

Atomic Number ◽

Quantum States ◽

Hartree Approximation ◽

Stable Nucleus ◽

The Stability

Leaving out of consideration those nuclei of small atomic number it is possible to develop a statistical theory of nuclei. Bethe and Bacher (1936, p. 149), as well as many other writers, have treated this subject in great detail starting from the Hartree approximation. All these investigations were mainly concerned with the binding energy, and not much attention has been paid so far to the stability of nuclei according to the statistical theory, except the determination of the most stable nucleus with a given atomic number: this is due to the fact that previous investigators have always neglected to distinguish between quantum states with opposite spin, thereby losing the distinction between “odd” and “even” nuclei, which is essential for stability considerations.

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