SAXS and TEM investigation of ion tracks in neodymium-doped yttrium aluminium garnet

Rodríguez, Matías; Li, Weixing; Chen, F; Trautmann, C.; Bierschenk, Thomas; Afra, Boshra; Schauries, Daniel; Ewing, Rodney C.; Mudie, Stephen; Kluth, Patrick

doi:10.1016/j.nimb.2013.10.076

Cited by 24 publications

(15 citation statements)

References 15 publications

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“…The orientation of the track in this case is parallel to the zone axis, as determined by diffraction ( Fig. 3 (e) assume that the mass density of amorphous tracks is less than the surrounding crystalline matrix [31]. Consequently, we suggest, that the density of the amorphous tracks is 1±0.5%…”

Section: Small Angle X-ray Scatteringmentioning

confidence: 60%

Orientation dependence of swift heavy ion track formation in potassium titanyl phosphate

Mota‐Santiago

Rodríguez

et al. 2016

J. Mater. Res.

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Section: Small Angle X-ray Scatteringmentioning

confidence: 60%

Orientation dependence of swift heavy ion track formation in potassium titanyl phosphate

Mota‐Santiago

Rodríguez

et al. 2016

J. Mater. Res.

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“…Alternatively, for higher mass WIMPs with significantly longer induced nuclear recoil tracks, Small Angle X-ray scattering (SAXs) at synchrotron facilities should be capable of fully three dimensional imaging of bulk samples with minimal sample preparation [110]. Ion tracks have been revealed without etching in crystalline materials using SAXs, although only after imaging the sample along the direction of the recorded track [111]. Also, SAXs tomography has achieved ∼ 15 nm threedimensional spatial resolution [112] but not for resolving damage from ion tracks, which cause only small variations in electron density of the target material.…”

Section: Read-out Methodsmentioning

confidence: 99%

Paleo-detectors: Searching for dark matter with ancient minerals

et al. 2019

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We explore paleo-detectors as an approach to the direct detection of Weakly Interacting Massive Particle (WIMP) dark matter radically different from conventional detectors. Instead of instrumenting a (large) target mass in a laboratory in order to observe WIMP-induced nuclear recoils in real time, the approach is to examine ancient minerals for traces of WIMP-nucleus interactions recorded over timescales as large as 1 Gyr. Here, we discuss the paleo-detector proposal in detail, including background sources and possible target materials. In order to suppress backgrounds induced by radioactive contaminants such as uranium, we propose to use minerals found in marine evaporites or in ultra-basic rocks. We estimate the sensitivity of paleo-detectors to spin-independent and spin-dependent WIMP-nucleus interactions. The sensitivity to low-mass WIMPs with masses mχ 10 GeV extends to WIMP-nucleon cross sections many orders of magnitude smaller than current upper limits. For heavier WIMPs with masses mχ 30 GeV cross sections a factor of a few to ∼ 100 smaller than current upper limits can be probed by paleo-detectors.

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“…• High exposure -we assume a track length resolution of σ x T = 15 nm. Small angle X-ray scattering has been demonstrated to achieve such spatial resultions in three dimensions [47,62,63]. However, such resolutions have not yet been demonstrated when imaging damage tracks arising from nuclear recoils.…”

Section: B Paleo-detector Ratesmentioning

confidence: 99%

“…Mineral-based searches, initially for monopoles and then for DM, have been proposed and performed before [49][50][51][52][53][54][55][56]. However, modern high-resolution imaging techniques [57][58][59][60][61][62][63] as well as the availability of rocks from deeper underground may significantly improve the prospects for DM detection. In particular, measurements of nanometre-length tracks could provide sensitivity to recoil energies as low as 100 eV.…”

Section: Introductionmentioning

confidence: 99%

Digging for dark matter: Spectral analysis and discovery potential of paleo-detectors

et al. 2019

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Paleo-detectors are a recently proposed method for the direct detection of Dark Matter (DM). In such detectors, one would search for the persistent damage features left by DM-nucleus interactions in ancient minerals. Initial sensitivity projections have shown that paleo-detectors could probe much of the remaining Weakly Interacting Massive Particle (WIMP) parameter space. In this paper, we improve upon the cut-and-count approach previously used to estimate the sensitivity by performing a full spectral analysis of the background-and DM-induced signal spectra. We consider two scenarios for the systematic errors on the background spectra: i) systematic errors on the normalization only, and ii) systematic errors on the shape of the backgrounds. We find that the projected sensitivity is rather robust to imperfect knowledge of the backgrounds. Finally, we study how well the parameters of the true WIMP model could be reconstructed in the hypothetical case of a WIMP discovery.

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SAXS and TEM investigation of ion tracks in neodymium-doped yttrium aluminium garnet

Cited by 24 publications

References 15 publications

Orientation dependence of swift heavy ion track formation in potassium titanyl phosphate

Orientation dependence of swift heavy ion track formation in potassium titanyl phosphate

Paleo-detectors: Searching for dark matter with ancient minerals

Digging for dark matter: Spectral analysis and discovery potential of paleo-detectors

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