Academic literature on the topic 'Neutron lifetime'

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Journal articles on the topic "Neutron lifetime"

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Mampe, W., P. Ageron, C. Bates, J. M. Pendlebury, and A. Steyerl. "Neutron lifetime measured with stored ultracold neutrons." Physical Review Letters 63, no. 6 (1989): 593–96. http://dx.doi.org/10.1103/physrevlett.63.593.

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Kumar, Vinod, S. Kumar, G. Gangopadhyay, and D. Negi. "Correlation between ground state lifetime and valence nucleons for isotopic chains." Modern Physics Letters A 29, no. 20 (2014): 1450102. http://dx.doi.org/10.1142/s0217732314501028.

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The variation of β-decay lifetime of the ground state of various isotope chains display a systematic behavior with respect to the ratio of the number of valence neutron particles or holes and the maximum possible number of neutron particles or holes in that shell. Lifetimes, depending on the particle or hole nature of the protons and neutrons, as well as whether they belong to the same shell or not, are found to exhibit similar increasing or decreasing trends and display similar behavior with respect to variation of the above-mentioned ratio.
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Kulikov, Gennady G., Anatoly N. Shmelev, Vladimir A. Apse, and Evgeny G. Kulikov. "On a significant slowing-down of the kinetics of fast transient processes in a fast reactor." Nuclear Energy and Technology 6, no. 4 (2020): 295–98. http://dx.doi.org/10.3897/nucet.6.60379.

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The kinetics of nuclear reactors is determined by the average neutron lifetime. When the inserted reactivity is more than the effective delayed neutron fraction, the reactor kinetics becomes very rapid. It is possible to slow down the fast reactor kinetics by increasing the neutron lifetime. The authors consider the possibility of using the lead isotope, 208Pb, as a neutron reflector with specific properties in a lead-cooled fast reactor. To analyze the emerging effects in a reactor of this type, a point kinetics model was selected, which takes into account neutrons returning from the 208Pb re
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Serebrov, Anatolii P. "Neutron lifetime measurements using gravitationally trapped ultracold neutrons." Physics-Uspekhi 48, no. 9 (2005): 867–85. http://dx.doi.org/10.1070/pu2005v048n09abeh003536.

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O’Shaughnessy, C. M., R. Golub, K. W. Schelhammer, et al. "Measuring the neutron lifetime using magnetically trapped neutrons." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 611, no. 2-3 (2009): 171–75. http://dx.doi.org/10.1016/j.nima.2009.07.054.

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Serebrov, Anatolii P. "Neutron lifetime measurements using gravitationally trapped ultracold neutrons." Uspekhi Fizicheskih Nauk 175, no. 9 (2005): 905. http://dx.doi.org/10.3367/ufnr.0175.200509a.0905.

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Wietfeldt, Fred E., and Geoffrey L. Greene. "Colloquium: The neutron lifetime." Reviews of Modern Physics 83, no. 4 (2011): 1173–92. http://dx.doi.org/10.1103/revmodphys.83.1173.

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Andreev, V., A. Vassiljev, E. Ivanov, D. Ilyin, A. Krivshich, and A. Serebrov. "Ultracold neutron detector for neutron lifetime measurements." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 845 (February 2017): 548–51. http://dx.doi.org/10.1016/j.nima.2016.05.005.

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Morozov, V. I. "Neutron lifetime determination by ultracold neutron storage." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 284, no. 1 (1989): 108–10. http://dx.doi.org/10.1016/0168-9002(89)90259-3.

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Pattie, R. W., N. B. Callahan, C. Cude-Woods та ін. "Status of the UCNτ experiment". EPJ Web of Conferences 219 (2019): 03004. http://dx.doi.org/10.1051/epjconf/201921903004.

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The neutron is the simplest nuclear system that can be used to probe the structure of the weak interaction and search for physics beyond the standard model. Measurements of neutron lifetime and β-decay correlation coefficients with precisions of 0.02% and 0.1%, respectively, would allow for stringent constraints on new physics. The UCNτ experiment uses an asymmetric magneto-gravitational UCN trap with in situ counting of surviving neutrons to measure the neutron lifetime, τn = 877.7s (0.7s)stat (+0.4/−0.2s)sys. We discuss the recent result from UCNτ, the status of ongoing data collection and a
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Dissertations / Theses on the topic "Neutron lifetime"

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Pattie, Robert W. Jr. "UCNτ : A Magneto-Gravitational Trap for Measuring the Neutron Lifetime". Digital Commons @ East Tennessee State University, 2019. https://dc.etsu.edu/etsu-works/5531.

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Kahlenberg, Jan [Verfasser]. "First full-magnetic storage of ultracold neutrons in the tSPECT experiment for measuring the neutron lifetime / Jan Kahlenberg." Mainz : Universitätsbibliothek der Johannes Gutenberg-Universität Mainz, 2020. http://d-nb.info/1224810465/34.

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Rosenau, Felix. "HOPE - un piège magnétique pour neutron ultra-froid dédié à la mesure du temps de vie du neutron : conception et premières données expérimentales." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAY036/document.

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Le temps de vie du neutron libre joue un rôle important dans la physique des particules comme dans des modèles cosmologiques. Notre connaissance de la valeur précise du temps de vie du neutron est limitée par les incertitudes systématiques des deux méthodes expérimentales couramment utilisées, les méthodes dites de "faisceau" et de "bouteille matérielle". En outre une déviation systématique des valeurs de temps de vie obtenues par les deux méthodes s'est manifestée au cours des dernières décennies.Le projet HOPE fait parti d'une nouvelle génération d'expériences qui cherchent à mesurer le temp
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Regan, Patrick Henry. "Gamma-ray spectroscopy and lifetime studies of neutron deficient samarium and promethium nuclei." Thesis, University of York, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.292549.

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Picker, Rüdiger. "PENeLOPE and AbEx - on the way towards a new precise neutron lifetime measurement." kostenfrei, 2008. http://mediatum2.ub.tum.de/doc/650460/650460.pdf.

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George, Tyrel Daniel Frank. "Design and testing of long-lifetime active sensor arrays for in-core multi-dimensional flux measurements." Thesis, Kansas State University, 2016. http://hdl.handle.net/2097/35229.

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Master of Science<br>Department of Mechanical and Nuclear Engineering<br>Douglas S. McGregor<br>Fission chambers are a common type of detector used to determine the neutron flux and power of a nuclear reactor. Due to the limited space and high neutron flux in a reactor core, it is difficult to perform real-time flux measurements with present-day in-core instrumentation. Micro-pocket fission detectors, or MPFDs, are relatively small in size and have low neutron sensitivity while retaining a large neutron to gamma ray discrimination ratio, thereby, allowing them to be used as active neutron flux
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Nelson, Anthony Joseph. "Carbon Nanotube Based Dosimetry of Neutron and Gamma Radiation." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/79732.

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As the world's nuclear reactors approach the end of their originally planned lifetimes and seek license extensions, which would allow them to operate for another 20 years, accurate information regarding neutron radiation exposure is more important than ever. Structural components such as the reactor pressure vessel (RPV) become embrittled by neutron irradiation, reducing their capability to resist crack growth and increasing the risk of catastrophic failure. The current dosimetry approaches used in these high flux environments do not provide real-time information. Instead, radiation dose is
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Lafont, Fabien. "Développement du détecteur d'électrons SECOND dédié à la mesure du temps de vie du neutron dans l'expérience HOPE." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAY065/document.

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Sous réserve d’une énergie cinétique suffisamment faible, un neutron libre peut être piégé matériellement ou magnétiquement de sorte à garantir son confinement au sein d’un volume défini. Cette caractéristique permet l’étude de plusieurs paramètres, notamment de son temps de vie moyen. L’expérience HOPE, piège magnétique de neutrons ultra-froids mis en œuvre à l’Institut Laue Langevin à Grenoble, vise à fournir une valeur précise de ce temps de vie au travers de différentes méthodes. L’une d’entre elles consiste à observer les électrons émis par la décroissance bêta du neutron. Le détecteur SE
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Grocutt, Laura. "Lifetime measurements of excited states in N-20 sd-pf shell neutron-rich nuclei using AGATA and PRISMA." Thesis, University of the West of Scotland, 2016. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.765747.

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Leung, Kent [Verfasser], Peter [Akademischer Betreuer] Fierlinger, and PETER [Akademischer Betreuer] BOENI. "Development of a new superfluid helium ultra-cold neutron source and a new magnetic trap for neutron lifetime measurements / Kent Leung. Gutachter: Peter Fierlinger ; Peter Böni. Betreuer: Peter Fierlinger." München : Universitätsbibliothek der TU München, 2013. http://d-nb.info/1031511776/34.

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Books on the topic "Neutron lifetime"

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Seestrom, Susan J. Next Generation Experiments to Measure the Neutron Lifetime: Proceedings of the Workshop. World Scientific Publishing Co Pte Ltd, 2014.

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A direct measurement of the lifetime of the neutral pion. 1985.

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Book chapters on the topic "Neutron lifetime"

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Byrne, J. "The Neutron Lifetime." In Weak and Electromagnetic Interactions in Nuclei. Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-71689-8_99.

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Zhou, Chao, Hui Zhao, Jibin Zhang, Ke Meng, Long Jiang, and Weinan Ma. "Study on Neutron Lifetime Logging Technology in Horizontal Well." In Springer Series in Geomechanics and Geoengineering. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2485-1_171.

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Nizeyimana, F., and H. Issard. "A Kinetic Model for Predicting Polymeric Neutron Shieldings Lifetime." In Service Life Prediction of Exterior Plastics. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-06034-7_4.

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Borodkin, Pavel, Azamat Gazetdinov, Nikolay Khrennikov, et al. "Advanced Neutron Dosimetry on VVER-440 Aimed to Reactor Equipment Load Evaluation during Lifetime Prolongation." In Reactor Dosimetry: 16th International Symposium. ASTM International, 2018. http://dx.doi.org/10.1520/stp160820170118.

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Hempel, A., M. Hasegawa, G. Brauer, F. Plazaola, M. Saneyasu, and Z. Tang. "Effects of Neutron Irradiation on Positron Lifetime and Micro-Vickers Hardness of Fe-Cu Model Alloys and Reactor Pressure Vessel Steel." In Ninth International Symposium on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors. John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118787618.ch88.

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Hein, Hieronymus, Hilmar Schnabel, and Stephan Welzel. "Material Investigations on Highly Irradiated Aluminum Magnesium Alloys for Lifetime Assessment of a Neutron Beam Tube in the BER II Research Reactor." In Effects of Radiation on Nuclear Materials: 25th Volume. ASTM International, 2012. http://dx.doi.org/10.1520/stp104128.

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Hein, Hieronymus, Hilmar Schnabel, and Stephan Welzel. "Material Investigations on Highly Irradiated Aluminum Magnesium Alloys for Lifetime Assessment of a Neutron Beam Tube in the BER II Research Reactor." In Effects of Radiation on Nuclear Materials: 25thVolume. ASTM International, 2012. http://dx.doi.org/10.1520/stp104128t.

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Gupta, Chandan, Sandhya Choubey, Srubabati Goswami, S. M. Lakshmi, and Tarak Thakore. "Bounds on Neutrino Decay Lifetime with ICAL Detector." In XXII DAE High Energy Physics Symposium. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73171-1_104.

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Oesch, U., O. Dinten, D. Ammann, and W. Simon. "Lifetime of Neutral Carrier-Based Membranes in Aqueous Systems and Blood Serum." In Ion Measurements in Physiology and Medicine. Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70518-2_7.

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Miya, K., H. Hashizume, H. Oomura, and M. Akiyama. "Lifetime Analysis of First wall Materials Exposed to High Temperature and High Energy Neutrons in a Fusion Reactor." In Advanced Materials for Severe Service Applications. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3445-0_10.

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Conference papers on the topic "Neutron lifetime"

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MARCIANO, W. J. "Neutron Lifetime Theory." In Next Generation Experiments to Measure the Neutron Lifetime. WORLD SCIENTIFIC, 2014. http://dx.doi.org/10.1142/9789814571678_0001.

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MUMM, H. P., M. G. HUBER, A. T. YUE, et al. "Measuring the Neutron Lifetime with Magnetically Trapped Ultracold Neutrons." In Next Generation Experiments to Measure the Neutron Lifetime. WORLD SCIENTIFIC, 2014. http://dx.doi.org/10.1142/9789814571678_0013.

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Nico, J. S. "Neutron Lifetime Measurements." In INTERSECTIONS OF PARTICLE AND NUCLEAR PHYSICS: 9th Conference CIPAN2006. AIP, 2006. http://dx.doi.org/10.1063/1.2402605.

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HUFFMAN, P. R. "Overview of Magnetic Trapping Neutron Lifetime Experiments." In Next Generation Experiments to Measure the Neutron Lifetime. WORLD SCIENTIFIC, 2014. http://dx.doi.org/10.1142/9789814571678_0003.

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LIU, C. Y., D. SALVAT, and E. ADAMEK. "Phase Space Evolution in Neutron Traps for Measurements of the Neutron Beta-Decay Lifetime." In Next Generation Experiments to Measure the Neutron Lifetime. WORLD SCIENTIFIC, 2014. http://dx.doi.org/10.1142/9789814571678_0005.

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BOWMAN, J. DAVID, and SEPPO I. PENTTILA. "Chaos in a Gravo-Magneto Neutron Trap." In Next Generation Experiments to Measure the Neutron Lifetime. WORLD SCIENTIFIC, 2014. http://dx.doi.org/10.1142/9789814571678_0006.

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"Color Plates." In Next Generation Experiments to Measure the Neutron Lifetime, edited by Susan J. Seestrom. WORLD SCIENTIFIC, 2014. http://dx.doi.org/10.1142/9789814571678_0018.

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WIETFELDT, F. E. "Neutron Lifetime Experiments Using the Beam Method: Past, Present, and Future." In Next Generation Experiments to Measure the Neutron Lifetime. WORLD SCIENTIFIC, 2014. http://dx.doi.org/10.1142/9789814571678_0002.

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YOUNG, A. R. "Some Thoughts Concerning the Statistics and Ultracold Neutron Source Requirements for the UCNτ Experiment". У Next Generation Experiments to Measure the Neutron Lifetime. WORLD SCIENTIFIC, 2014. http://dx.doi.org/10.1142/9789814571678_0004.

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COAKLEY, K. J. "Stochastic Modeling and Simulation of Marginally Trapped Neutrons." In Next Generation Experiments to Measure the Neutron Lifetime. WORLD SCIENTIFIC, 2014. http://dx.doi.org/10.1142/9789814571678_0007.

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Reports on the topic "Neutron lifetime"

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Dr. Jonathan M. Richardson. Long-Lifetime Low-Scatter Neutron Polarization Target. Office of Scientific and Technical Information (OSTI), 2004. http://dx.doi.org/10.2172/825731.

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Salvat, Daniel. Measuring the Neutron Lifetime with a Magnetic Neutron Trap at LANL. Office of Scientific and Technical Information (OSTI), 2014. http://dx.doi.org/10.2172/1130992.

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Coupland, Daniel David Schechtman, Katherine Elizabeth Mesick, and Caleb Daniel Roecker. Analysis of Lunar Prospector Data to Constrain the Neutron Lifetime. Office of Scientific and Technical Information (OSTI), 2018. http://dx.doi.org/10.2172/1479880.

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Lind, V. G. Direct mass and lifetime measurements of neutron-rich nuclei up to A[approximately]100 using the TOFI spectrometer at LAMPF. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/7368557.

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Lind, V. G. Direct mass and lifetime measurements of neutron-rich nuclei up to A{approximately}100 using the TOFI spectrometer at LAMPF. Final report, April 15, 1986--March 14, 1992. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/10164960.

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Ahmad, I., C. J. Lister, and L. R. Morss. Lifetimes in neutron-rich Nd isotopes measured by Doppler profile method. Office of Scientific and Technical Information (OSTI), 1995. http://dx.doi.org/10.2172/166329.

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Butler, J. M. Measurement of the charged and neutral D meson lifetimes. Office of Scientific and Technical Information (OSTI), 1986. http://dx.doi.org/10.2172/6058450.

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Cammerata, Jeffrey Donald. A Lifetime Measurement of the Exclusive Charged and Neutral B Meson States. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/1372327.

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Teymurazyan, Aram. Photon flux determination for a precision measurement of the neutral pion lifetime. Office of Scientific and Technical Information (OSTI), 2008. http://dx.doi.org/10.2172/955697.

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Clinton, Eric. A Precision Measurement of the Neutral Pion Lifetime via the Primakoff Effect. Office of Scientific and Technical Information (OSTI), 2007. http://dx.doi.org/10.2172/955702.

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