6 Neutron scattering lengths

Rauch, H.; Waschkowski, W.

doi:10.1007/10499706_6

Cited by 50 publications

(38 citation statements)

References 74 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The high amount of boron in londonite (B 2 O 3 ~50 wt%) makes its synthetic counterpart a potential neutron absorber, due to the high capacity of boron to absorb neutrons [the absorption cross section of boron of ‘normal’ isotopic constitution, i.e. 10 B 20% + 11 B 80%, is 749±4 barns at 2200 m/s, whereas it is 3835±9 barns for pure 10 B]. Neutron absorber materials usually consist of alloy or composite materials that contain a neutron absorber nuclide, and are used, for example, in spent fuel applications (in order to maintain the fuel in a subcritical condition), or in medical applications (e.g., neutron capture therapy for cancer).…”

Section: Discussionmentioning

confidence: 65%

High‐pressure behavior of (Cs,K)Al₄Be₅B₁₁O₂₈ (londonite): A single‐crystal synchrotron diffraction study up to 26 GPa

et al. 2017

View full text Add to dashboard Cite

The compressional behavior and the P-induced deformation mechanisms at the atomic scale of (Cs,K)Al 4 Be 5 B 11 O 28 (londonite, a~7.31 A and space group P43m) were investigated by in situ single-crystal synchrotron X-ray diffraction with a diamond anvil cell up to 26 GPa. No phase transition was observed within the P-range investigated: this material exhibits isotropic compression (i.e., with cubic symmetry) in response to the applied pressure. Fitting the P-V data with a Birch-Murnaghan isothermal equation of state, we obtained:) and K 0 =4.6(6). A series of structural refinements, based on the high-pressure intensity data, were performed. The stiffness of londonite (similar to that of carbides) is governed by its close-packing structure, and in particular by the very low compressibility of B-and Be-tetrahedra and the modest compressibility of the Al-octahedra. The Cs-polyhedra are the most compressible units of the structure. The effects of pressure can be accommodated by intrapolyhedral compression or deformation, leading to a modest bulk compression. The high amount of boron in londonite (B 2 O 3~5 0 wt%) makes its synthetic counterpart a potential neutron absorber. In addition, the high content of Cs makes londonite-type materials as potential hosts for nuclear waste. K E Y W O R D Sborates, cesium/cesium compounds, elastic constants, single crystals, structure

show abstract

Section: Discussionmentioning

confidence: 65%

High‐pressure behavior of (Cs,K)Al₄Be₅B₁₁O₂₈ (londonite): A single‐crystal synchrotron diffraction study up to 26 GPa

et al. 2017

View full text Add to dashboard Cite

show abstract

“…The main advantage of neutrons over X-rays is their low absorption by most elements [25]. Measurements can thus be performed in transmission mode on massive samples to obtain complete pole figures in a single experiment.…”

Section: Neutron Diffractionmentioning

confidence: 99%

Chapter Annealing

2010

Physical Metallurgy

View full text Add to dashboard Cite

Abstract. In material science, crystallographic texture is an important microstructural parameter which directly determines the anisotropy degree of most physical properties of a polycrystalline material at the macro scale. Its characterization is thus of fundamental and applied importance, and should ideally be performed prior to any physical property measurement or modeling. Neutron diffraction is a tool of choice for characterizing crystallographic textures: its main advantages over other existing techniques, and especially over the X-ray diffraction techniques, are due to the low neutron absorption by most elements. The obtained information is representative of a large number of grains, leading to a better accuracy of the statistical description of texture.

show abstract

“…Simple models [14] and more detailed treatments [15] of the neutron-nucleus interaction show that for most nuclei the scattering lengths are indeed positive. A summary of all neutron scattering lengths up to 1991 [16] and a set of recommended values [17] exist in the literature.…”

Section: Neutron Opticsmentioning

confidence: 99%

Fundamental Neutron Physics

Nico

Snow

2005

Annu. Rev. Nucl. Part. Sci.

View full text Add to dashboard Cite

▪ Abstract Experiments using slow neutrons address a growing range of scientific issues spanning nuclear physics, particle physics, astrophysics, and cosmology. The field of fundamental physics using neutrons has experienced a significant increase in activity over the last two decades. This review summarizes some of the recent developments in the field and outlines some of the prospects for future research.

show abstract

6 Neutron scattering lengths

Cited by 50 publications

References 74 publications

High‐pressure behavior of (Cs,K)Al₄Be₅B₁₁O₂₈ (londonite): A single‐crystal synchrotron diffraction study up to 26 GPa

High‐pressure behavior of (Cs,K)Al₄Be₅B₁₁O₂₈ (londonite): A single‐crystal synchrotron diffraction study up to 26 GPa

Chapter Annealing

Fundamental Neutron Physics

Contact Info

Product

Resources

About

6 Neutron scattering lengths

Cited by 50 publications

References 74 publications

High‐pressure behavior of (Cs,K)Al4Be5B11O28 (londonite): A single‐crystal synchrotron diffraction study up to 26 GPa

High‐pressure behavior of (Cs,K)Al4Be5B11O28 (londonite): A single‐crystal synchrotron diffraction study up to 26 GPa

Chapter Annealing

Fundamental Neutron Physics

Contact Info

Product

Resources

About

High‐pressure behavior of (Cs,K)Al₄Be₅B₁₁O₂₈ (londonite): A single‐crystal synchrotron diffraction study up to 26 GPa

High‐pressure behavior of (Cs,K)Al₄Be₅B₁₁O₂₈ (londonite): A single‐crystal synchrotron diffraction study up to 26 GPa