Search Results - "Filippone, B"
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Improved Neutron Lifetime Measurement with UCN τ
Published in Physical review letters (15-10-2021)“…We report an improved measurement of the free neutron lifetime τn using the UCN τ apparatus at the Los Alamos Neutron Science Center. We count a total of…”
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2
A compound parabolic concentrator as an ultracold neutron spectrometer
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (01-09-2013)“…The design principles of nonimaging optics are applied to ultracold neutrons (UCN). In particular a vertical compound parabolic concentrator (CPC) that…”
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3
Determination of the axial-vector weak coupling constant with ultracold neutrons
Published in Physical review letters (29-10-2010)“…A precise measurement of the neutron decay β asymmetry A₀ has been carried out using polarized ultracold neutrons from the pulsed spallation ultracold neutron…”
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4
High uniformity magnetic coil for search of neutron electric dipole moment
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (21-12-2011)“…We present in this article a prototype magnetic coil that has been developed for a new search for the electric dipole moment of the neutron at the Spallation…”
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5
Mild Transient Hypercapnia as a Novel Fear Conditioning Stimulus Allowing Re-Exposure during Sleep
Published in PloS one (26-06-2013)“…Studies suggest that sleep plays a role in traumatic memories and that treatment of sleep disorders may help alleviate symptoms of posttraumatic stress…”
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6
Strange Magnetism and the Anapole Structure of the Proton
Published in Science (American Association for the Advancement of Science) (15-12-2000)“…The violation of mirror symmetry in the weak force provides a powerful tool to study the internal structure of the proton. Experimental results have been…”
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7
Parity-violating electron deuteron scattering and the proton's neutral weak axial vector form factor
Published in Physical review letters (12-03-2004)“…We report on a new measurement of the parity-violating asymmetry in quasielastic electron scattering from the deuteron at backward angles at Q2=0.038 (GeV/c)2…”
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8
First measurement of the neutron beta asymmetry with ultracold neutrons
Published in Physical review letters (09-01-2009)“…We report the first measurement of an angular correlation parameter in neutron beta decay using polarized ultracold neutrons (UCN). We utilize UCN with…”
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9
Scaling of the F2 structure function in nuclei and quark distributions at x>1
Published in Physical review letters (19-11-2010)“…We present new data on electron scattering from a range of nuclei taken in Hall C at Jefferson Lab. For heavy nuclei, we observe a rapid falloff in the cross…”
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10
Overlap Technique for End-Cap Seals on Cylindrical Magnetic Shields
Published in IEEE transactions on magnetics (01-01-2013)“…We present results from studies of the effectiveness of an overlap technique for forming a magnetic seal across a gap at the boundary between a cylindrical…”
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11
Measurements of ultracold-neutron lifetimes in solid deuterium
Published in Physical review letters (30-12-2002)“…We present the first measurements of the survival time of ultracold neutrons (UCNs) in solid deuterium (SD2). This critical parameter provides a fundamental…”
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12
Scaling of the F 2 Structure Function in Nuclei and Quark Distributions at x > 1
Published in Physical review letters (01-11-2010)“…We present new data on electron scattering from a range of nuclei taken in Hall C at Jefferson Lab. For heavy nuclei, we observe a rapid falloff in the cross…”
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13
Preparation of 114m In low energy conversion electron sources
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (15-05-2011)“…Highlights ao Controlled ion implantation of In-113 into thin Al substrate. ao Production of In-114m (half life=50 days) by neutron irradiation. ao Use of…”
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14
The strange quark contribution to the proton's magnetic moment
Published in Physics letters. B (11-03-2004)“…We report a new determination of the strange quark contribution to the proton's magnetic form factor at a four-momentum transfer Q2=0.1 (GeV/c)2 from…”
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15
Longitudinal-transverse separations of deep-inelastic structure functions at low Q2 for hydrogen and deuterium
Published in Physical review letters (06-04-2007)“…We report on a study of the longitudinal to transverse cross section ratio, R=sigmaL/sigmaT, at low values of x and Q2, as determined from inclusive inelastic…”
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16
Sealed drift tube cosmic ray veto counters
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (01-05-2011)“…We describe a simple drift tube counter that has been used as a cosmic ray veto for the UCNA experiment, a first-ever measurement of the neutron beta-asymmetry…”
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17
Demonstration of a solid deuterium source of ultra-cold neutrons
Published in Physics letters. B (22-07-2004)“…Ultra-cold neutrons (UCN), neutrons with energies low enough to be confined by the Fermi potential in material bottles, are playing an increasing role in…”
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18
Impact of $^{16}$O($e,e'\alpha$)$^{12}$C measurements on the $^{12}$C($\alpha,\gamma$)$^{16}$O astrophysical reaction rate
Published 29-08-2019“…The $^{12}$C($\alpha,\gamma$)$^{16}$O reaction, an important component of stellar helium burning, has a key role in nuclear astrophysics. It has direct impact…”
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Impact of $^{16}$O($\gamma$,$\alpha$)$^{12}$C measurements on the $^{12}$C($\alpha,\gamma$)$^{16}$O astrophysical reaction rate
Published 30-04-2019“…Phys. Rev. C 99, 055802 (2019) The $^{12}$C($\alpha,\gamma$)$^{16}$O reaction, an important component of stellar helium burning, plays a key role in nuclear…”
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20
The HERMES dual-radiator ring imaging Cherenkov detector
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (01-03-2002)“…The construction and use of a dual radiator Ring Imaging Cherenkov (RICH) detector is described. This instrument was developed for the HERMES experiment at…”
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