A new 40m small angle neutron scattering instrument at HANARO, Korea

Han, Young‐Soo; Choi, Sung‐Min; Kim, Tae‐Hwan; Lee, ChangHee; Cho, Sangjin; Seong, Baek-Seok

doi:10.1016/j.nima.2013.04.052

Cited by 32 publications

(23 citation statements)

References 14 publications

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“…Three sample-to-detector distances (2.11, 6.11, and 20.09 m) were employed, covering a Q range from 0.004 to 0.33 Å -1 . SANS measurement of the other samples were carried out on the 40 m pinhole SANS beamline at the Korea Atomic Energy Research Institute (KAERI) (Han et al 2013), using a wavelength of 6 Å and a sample aperture size of 12 mm in diameter. Three sample-to-detector distances (1.16, 5.7, and 13.7 m) were used covering a Q range from 0.0033 to 0.47 Å -1 .…”

Section: Experimental Methodsmentioning

confidence: 99%

Characterization of porosity in sulfide ore minerals: A USANS/SANS study

Xia

Jing

Etschmann

et al. 2014

American Mineralogist

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25Porosity plays a key role in the formation and alteration of sulfide ore minerals, yet our knowledge 26 of the nature and formation of the residual pores is very limited. Herein, we report the application of 27 ultra small angle neutron scattering and small angle neutron scattering (USANS/SANS) to assess 28 the porosity in five natural sulfide minerals (violarite, marcasite, pyrite, chalcopyrite, and bornite)

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Section: Experimental Methodsmentioning

confidence: 99%

Characterization of porosity in sulfide ore minerals: A USANS/SANS study

Xia

Jing

Etschmann

et al. 2014

American Mineralogist

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“…The experimental method used to achieve the results reported in this Letter follows a similar approach. Constraints C to I were obtained by macroscopic tests, searching for non-Newtonian forces between test masses using techniques such as torsion balances and microcantilevers [12][13][14][15][16][17][18].This experiment was performed at the 40 m small angle neutron scattering (SANS) beam line located at the HA-NARO research reactor of the Korean Atomic Energy Research Institute [19]. [10,11], while constraints C to I were obtained using macroscopic methods [12][13][14][15][16][17][18].…”

mentioning

confidence: 99%

“…This experiment was performed at the 40 m small angle neutron scattering (SANS) beam line located at the HA-NARO research reactor of the Korean Atomic Energy Research Institute [19]. [10,11], while constraints C to I were obtained using macroscopic methods [12][13][14][15][16][17][18].…”

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confidence: 99%

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Constraints on New Gravitylike Forces in the Nanometer Range

et al. 2015

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We report on a new constraint on gravitylike short-range forces, in which the interaction charge is mass, obtained by measuring the angular distribution of 5Å neutrons scattering off atomic xenon gas. Around 10 7 scattering events were collected at the 40 m small angle neutron scattering beam line located at the HANARO research reactor of the Korean Atomic Energy Research Institute. The extracted coupling strengths of new forces in the Yukawa-type parametrization areĝ 2 = (0.2 ± 6.8 ± 2.0)×10 −15 GeV −2 andĝ 2 = (−5.3±9.0GeV −2 for interaction ranges of 0.1 and 1.0 nm, respectively. These strengths correspond to 95% confidence level limits of g 2 < (1.4 ± 0.2) × 10GeV −2 and g 2 < (1.3 ± 0.2) × 10 −16 GeV −2 , improving the current limits for interaction ranges between 4 and 0.04 nm by a factor of up to 10.Extensions of the standard model of particle physics have long been discussed. Some of these theories, based on supersymmetry or extra space dimensions, naturally involve gravity or gravitylike interactions even at low energies. Several models predict new bosons mediating gravitylike forces that couple to mass, baryon number, or, in the case of grand unification models, to the difference of baryon and lepton numbers [1][2][3][4][5][6]. This class of models induces modifications to the Newtonian inversesquare law of gravitational interactions, and may also cause violation of the weak equivalence principle. These proposals motivate us to search for new gravitylike forces. Comprehensive reviews of such theories, and the forces they predict, can be found in Refs. [7][8][9].The forces due to such new bosons can be simply modeled by a Yukawa-type scattering potential written in natural units aswhere g 2 is a coupling strength, Q i are coupling charges, and µ is the mass of the boson mediating the force. Such models can be considered in the g 2 − µ or g 2 − λ parameter space, where λ ≡ 1/µ is the interaction range. Current experimental limits at 95% confidence level (C.L.) for interactions that couple to mass are shown in Fig. 1. Constraints A and B were obtained by microscopic experiments that precisely measured interactions between neutrons and atoms [10,11]. The experimental method used to achieve the results reported in this Letter follows a similar approach. Constraints C to I were obtained by macroscopic tests, searching for non-Newtonian forces between test masses using techniques such as torsion balances and microcantilevers [12][13][14][15][16][17][18].This experiment was performed at the 40 m small angle neutron scattering (SANS) beam line located at the HA-NARO research reactor of the Korean Atomic Energy Research Institute [19]. [10,11], while constraints C to I were obtained using macroscopic methods [12][13][14][15][16][17][18]. Theoretical expectations from an extra U (1) gauge boson at different symmetry breaking scales Λ U (1) (∼ 246 GeV and 10 TeV) [1,2], and from a baryon number gauge field in the bulk of extra space dimensions [3,4] are shown as dashed lines and the hatched area, respectively.of ...

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“…The current decade has witnessed an increase in the number and the geographical spread of new SANS instruments (Peng et al, 2016;Mü hlbauer et al, 2016;Dewhurst et al, 2016;Wood et al, 2015;Zhang et al, 2014;Vogtt et al, 2014;Heller et al, 2014;Rehm et al, 2013;Han et al, 2013;Liu et al, 2011;Zhao et al, 2010) and in upgrades of existing ones (Stone et al, 2016;Radulescu et al, 2015;Feoktystov et al, 2015;Wignall et al, 2012;Iwase et al, 2011;Goerigk & Varga, 2011). Most of these instruments are designed to study various sample types (both hard and soft matter) from diverse scientific fields, including biology, chemistry, physics and material sciences.…”

Section: Sans Beamlines and Sample Environmentsmentioning

confidence: 99%

Biological small-angle neutron scattering: recent results and development

Mahieu

Gabel

2018

Acta Cryst Sect D Struct Biol

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Small-angle neutron scattering (SANS) has increasingly been used by the structural biology community in recent years to obtain low-resolution information on solubilized biomacromolecular complexes in solution. In combination with deuterium labelling and solvent-contrast variation (HO/DO exchange), SANS provides unique information on individual components in large heterogeneous complexes that is perfectly complementary to the structural restraints provided by crystallography, nuclear magnetic resonance and electron microscopy. Typical systems studied include multi-protein or protein-DNA/RNA complexes and solubilized membrane proteins. The internal features of these systems are less accessible to the more broadly used small-angle X-ray scattering (SAXS) technique owing to a limited range of intra-complex and solvent electron-density variation. Here, the progress and developments of biological applications of SANS in the past decade are reviewed. The review covers scientific results from selected biological systems, including protein-protein complexes, protein-RNA/DNA complexes and membrane proteins. Moreover, an overview of recent developments in instruments, sample environment, deuterium labelling and software is presented. Finally, the perspectives for biological SANS in the context of integrated structural biology approaches are discussed.

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A new 40m small angle neutron scattering instrument at HANARO, Korea

Cited by 32 publications

References 14 publications

Characterization of porosity in sulfide ore minerals: A USANS/SANS study

Characterization of porosity in sulfide ore minerals: A USANS/SANS study

Constraints on New Gravitylike Forces in the Nanometer Range

Biological small-angle neutron scattering: recent results and development

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