On the Mossbauer effect in metallic glasses

Billard, L.; Lançon, Frédéric; Rodmacq, B.; Chamberod, A.

doi:10.1088/0305-4608/14/2/026

Cited by 65 publications

(27 citation statements)

References 7 publications

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“…Moreover, any residual anisotropy would be further smeared as directional detection is sensitive to the induced recoils, and not the neutrons themselves. Under the isotropy hypothesis, a likelihood analysis of directional data is possible [71]. In fact, the neutron background only has to be known and a full Monte Carlo evaluation of the neutron angular distribution in underground laboratories would be a valuable contribution to the field, to assess the level of isotropy of the neutron background in Galactic coordinates.…”

Section: Residual Background Contaminationmentioning

confidence: 99%

“…For instance for λ = 0.1 roughly 300 events would be required. Billard et al [71] investigated measuring the peak recoil direction with a map-based likelihood method using Poisson statistics:…”

Section: Measuring the Mean Recoil Directionmentioning

confidence: 99%

“…• the proof of discovery is given by the reconstruction of the main incoming direction (ℓ ⊙ , b ⊙ ), as in Ref. [71], which corresponds to the direction of the Sun's velocity vector within 2.5 degree.…”

Section: Constraining Halo and Wimp Propertiesmentioning

confidence: 99%

“…For instance, increasing the velocity dispersions leads to an increase in the number of expected WIMP events and to a wider WIMP event angular distribution. The latter can be compensated by decreasing the WIMP mass as it leads to a tighter angular distribution [71,176]. The posterior PDF of the β parameter is computed from Eq.…”

Section: Constraining Dark Matter Halo Propertiesmentioning

confidence: 99%

“…with a large number of parameters. Several studies have been carried out on the subject [71,157,158] and the free parameters considered may be:…”

Section: A Introductionmentioning

confidence: 99%

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A review on the discovery reach of Dark Matter directional detection

Mayet

Billard

2013

J. Phys.: Conf. Ser.

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Cosmological observations indicate that most of the matter in the Universe is Dark Matter. Dark Matter in the form of Weakly Interacting Massive Particles (WIMPs) can be detected directly, via its elastic scattering off target nuclei. Most current direct detection experiments only measure the energy of the recoiling nuclei. However, directional detection experiments are sensitive to the direction of the nuclear recoil as well. Due to the Sun's motion with respect to the Galactic rest frame, the directional recoil rate has a dipole feature, peaking around the direction of the Solar motion. This provides a powerful tool for demonstrating the Galactic origin of nuclear recoils and hence unambiguously detecting Dark Matter. Furthermore, the directional recoil distribution depends on the WIMP mass, scattering cross section and local velocity distribution. Therefore, with a large number of recoil events it will be possible to study the physics of Dark Matter in terms of particle and astrophysical properties. We review the potential of directional detectors for detecting and characterizing WIMPs.

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Section: Residual Background Contaminationmentioning

confidence: 99%

Section: Measuring the Mean Recoil Directionmentioning

confidence: 99%

Section: Constraining Halo and Wimp Propertiesmentioning

confidence: 99%

Section: Constraining Dark Matter Halo Propertiesmentioning

confidence: 99%

“…with a large number of parameters. Several studies have been carried out on the subject [71,157,158] and the free parameters considered may be:…”

Section: A Introductionmentioning

confidence: 99%

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A review on the discovery reach of Dark Matter directional detection

Mayet

Billard

2013

J. Phys.: Conf. Ser.

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Hydrothermal Synthesis, Crystal Structure, Spectroscopic and Magnetic Properties of (C₃H₁₂N₂)_0.75[Fe^II_1.5Fe^III_1.5(AsO₄)F₆]

Bazán

Mesa²,

Pizarro

et al. 2005

Zeitschrift anorg allge chemie

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A new iron(II)-iron(III) mixed valence fluoro-arsenate compound templated by propanediammonium cations has been synthesized by using mild hydrothermal conditions. The crystal structure has been solved from single-crystal x-ray diffraction data. This phase crystallizes in the Imam space group with the unit-cell parameters a ϭ 7.566(2), b ϭ 11.034(3) and c ϭ 13.233(5) Å . The compound exhibits a three-dimensional framework constructed from two kinds of chains which delimit cavities in which the propanediammonium cations are located. Mössbauer and diffuse reflectance spectroscopies confirm the presence of Fe(II,III) mixed valence cations and the existence of slightly distorted octahedral environments for the metallic centres. Magnetic measurements indicate the existence a three-dimensional antiferromagnetic ordering at 6 K. However, at low temperatures, a small hysteresis loop is observed. The values of the remanent magnetization and coercitive field are 400 emu/mol and 1180 G, respectively. These results are in good agreement with the existence of a ferromagnetic component due to a spin descompensation by the mixed valence nature of this phase.

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