Position-sensitive detectors of the detector group at Jülich

Engels, R.; Clemens, U.; Kemmerling, G.; Nöldgen, H.; Schelten, J.

doi:10.1016/j.nima.2009.01.090

Cited by 12 publications

(6 citation statements)

References 8 publications

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“…For the experiments, a wavelength λ = 0.7 nm (Δλ/λ = 20%) and sample-to-detector distances (SDD) of 2 and 8 m were chosen, resulting in q -ranges of 0.049−0.45 and 0.25−1.7 nm −1 . The detector design is based on a modified Anger technology with a 6 Li glass as a scintillator . The solutions of P(S- d 8 ) 10 - b -PNIPAM 390 - b -P(S- d 8 ) 10 having concentrations of 50 and 220 mg/mL (ref ) were mounted in standard Hellma quartz cuvettes (light path of 1 or 2 mm).…”

Section: Methodsmentioning

confidence: 99%

“…The detector design is based on a modified Anger technology with a 6 Li glass as a scintillator. 41 The solutions of P(S-d 8 ) 10 -b-PNIPAM 390 -b-P(S-d 8 ) 10 having concentrations of 50 and 220 mg/mL (ref 42) were mounted in standard Hellma quartz cuvettes (light path of 1 or 2 mm). The exposure times per image were between 5 and 20 min for different concentrations and detector configurations.…”

Section: Size Exclusion Chromatography (Sec)mentioning

confidence: 99%

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Thermoresponsive PS-b-PNIPAM-b-PS Micelles: Aggregation Behavior, Segmental Dynamics, and Thermal Response

et al. 2010

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We have studied the thermal behavior of amphiphilic, symmetric triblock copolymers having short, deuterated polystyrene (PS) end blocks and a large poly(N-isopropylacrylamide) (PNIPAM) middle block exhibiting a lower critical solution temperature (LCST) in aqueous solution. A wide range of concentrations (0.1−300 mg/mL) is investigated using a number of analytical methods such as fluorescence correlation spectroscopy (FCS), turbidimetry, dynamic light scattering (DLS), small-angle neutron scattering (SANS), and neutron spin-echo spectroscopy (NSE). The critical micelle concentration is determined using FCS to be 1 μM or less. The collapse of the micelles at the LCST is investigated using turbidimetry and DLS and shows a weak dependence on the degree of polymerization of the PNIPAM block. SANS with contrast matching allows us to reveal the core−shell structure of the micelles as well as their correlation as a function of temperature. The segmental dynamics of the PNIPAM shell are studied as a function of temperature and are found to be faster in the collapsed state than in the swollen state. The mode detected has a linear dispersion in q 2 and is found to be faster in the collapsed state as compared to the swollen state. We attribute this result to the averaging over mobile and immobilized segments.

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Section: Methodsmentioning

confidence: 99%

Section: Size Exclusion Chromatography (Sec)mentioning

confidence: 99%

Thermoresponsive PS-b-PNIPAM-b-PS Micelles: Aggregation Behavior, Segmental Dynamics, and Thermal Response

et al. 2010

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“…The KWS-2 main detector is based on the Anger principle [7] with an array of 8x8 photomultipliers, a 60x60cm 2 6 Li glass scintillator with an efficiency >95% for λ>4.5Å neutrons [8] and a light disperser glass, which spread the light produced by a neutron event to an array of 3x3 photomultipliers [9]. The readout electronics enables fast signal and data processing (about 0.6μs statistical dead-time) and allows for the acquisition of stable and reliable count rates up to 0.6MHz.…”

Section: Main Detectormentioning

confidence: 99%

KWS-2, the high intensity / wideQ-range small-angle neutron diffractometer for soft-matter and biology at FRM II

Rădulescu¹,

Pipich

Frielinghaus

et al. 2012

J. Phys.: Conf. Ser.

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The KWS-2 small-angle neutron diffractometer operated by JCNS at FRM II is upgraded and optimized towards high intensity and wide Q-range studies of mesoscopic structures and structural changes due to rapid kinetics and becomes a dedicated SANS instrument to soft-matter and biology. The high intensity permits fast measurement of small or weak scattering samples and time resolved structural studies with a time resolution up to 100ms. The possibility to cover up to four decades in Q will soon enable structural investigation over a wide length scale, between several Å and 1μm. The characteristics and performance of the instrument in the conventional pinhole mode is detailed presented and the new upgrades currently in progress and aiming for boosting the instrument performance towards higher intensity and wider Q-range are reported.

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“…The 6 Li glass (GS20) scintillator has a poor light yield and limited ability in neutron-gamma discrimination. 16,17 Other Li, Gd, and B-containing compounds, such as Li 6 Gd(BO 3 ) 3 (LGBO), Ce:Gd 3 (Al,Ga) 5 O 12 (GAGG), CsLiCeCl 6 , and LiCaAlF 6 , cannot satisfy the stringent requirements of neutron detection one way or another. 18–22…”

Section: Introductionmentioning

confidence: 99%

Bright lead-free Cs₃Cu₂I₅ perovskite scintillators for thermal neutron detection

Lu¹,

Gui²,

Shi³

et al. 2023

Mater. Adv.

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Position-sensitive detectors of the detector group at Jülich

Cited by 12 publications

References 8 publications

Thermoresponsive PS-b-PNIPAM-b-PS Micelles: Aggregation Behavior, Segmental Dynamics, and Thermal Response

Thermoresponsive PS-b-PNIPAM-b-PS Micelles: Aggregation Behavior, Segmental Dynamics, and Thermal Response

KWS-2, the high intensity / wideQ-range small-angle neutron diffractometer for soft-matter and biology at FRM II

Bright lead-free Cs₃Cu₂I₅ perovskite scintillators for thermal neutron detection

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Position-sensitive detectors of the detector group at Jülich

Cited by 12 publications

References 8 publications

Thermoresponsive PS-b-PNIPAM-b-PS Micelles: Aggregation Behavior, Segmental Dynamics, and Thermal Response

Thermoresponsive PS-b-PNIPAM-b-PS Micelles: Aggregation Behavior, Segmental Dynamics, and Thermal Response

KWS-2, the high intensity / wideQ-range small-angle neutron diffractometer for soft-matter and biology at FRM II

Bright lead-free Cs3Cu2I5 perovskite scintillators for thermal neutron detection

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Bright lead-free Cs₃Cu₂I₅ perovskite scintillators for thermal neutron detection