Download or read book Spectroscopic Study of Capital Lambda hypernuclei Beyond the P shell written by Victor Manuel Rodriguez and published by . This book was released on 2006 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spectroscopic Study of Lambda Hypernuclei Beyon the P Shell written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spectroscopic Investigation of P Shell Lambda Hypernuclei by the e E K Reaction written by and published by . This book was released on 2014 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hypernuclear spectroscopy is a powerful tool to investigate Lambda-N interaction. Compared with other Lambda hypernuclei productions, electroproduction via the (e, e'K+) reaction has the advantage of exciting states deeply inside of the hypernucleus and achieving sub-MeV energy resolution. The E05-115 experiment, which was successfully performed in 2009, is the third generation hypernuclear experiment in JLab Hall C.A new splitter magnet and electron spectrometer were installed, and beam energy of 2.344 GeV was selected in this experiment. These new features gave better field uniformity, optics quality and made the tilt method more effective in improving yield-to-background ratio. The magnetic optics of the spectrometers were carefully studied with GEANT simulation, and corrections were applied to compensate for the fringe field cross talk between the compact spectrometer magnets. The non-linear least chi-squared method was used to further calibrate the spectrometer with the events from Lambda, Sigma0 and B12Lambda and uniform magnetic optics as well as precise kinematics were achieved. Several p-shell Lambda hypernuclear spectra, including B12[Lambda], Be10[Lambda], He7[Lambda], were obtained with high energy resolution and good accuracy. For B12[Lambda], eight peaks were recognized with the resolution of ~540keV (FWHM), and the ground state binding energy was obtained as 11.529 ± 0.012(stat.) ± 0.110(syst.) MeV. Be10[Lambda], twelve peaks were recognized with the resolution of ~520keV (FWHM), and the binding energy of the ground state was determined as 8.710 ± 0.059(stat.) ± 0.114(syst.) MeV. For He7[Lambda], three peaks were recognized with the resolution of ~730keV, and the ground state binding energy was obtained as 5.510 ± 0.050(stat.) ± 0.120(syst.) MeV. Compared with the published data of B12[Lambda] from the JLab Hall A experiment, four extra peaks were fitted and interpreted thanks to the highest ever energy resolution and sufficient statistics. The determined binding energy of Be10[Lambda] provides new information on charge symmetry breaking effect in the Lambda-N interaction. Compared with the results of He7Lambda from the E01-011 experiment, the ground state position is consistent with 4 times more statistics, and two extra peaks corresponding to excited states were recognized.
Download or read book P SHELL Lambda HYPERNUCLEI AND THE Lambda N EFFECTIVE INTERACTION written by and published by . This book was released on 2000 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Empirical data on the spectra of light hypernuclei, especially the data from recent [gamma]-ray experiments, is used to constrain the parameters which govern the P{sub N}s{sub {Lambda}} and p{sub N}p{sub {Lambda}}j two-body matrix elements that enter into shell-model calculations.
Download or read book Spectroscopic Study of the Lambda Hypernuclei by the e e K Reaction written by and published by . This book was released on 2002 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hypernuclear spectroscopy study via the (e,e'K+) reaction has been carried out for the first time, establishing a new technique to study Lambda hypernuclei. The high quality electron beam at Jefferson Lab made it possible to measure Lambda hypernuclear spectra with an energy resolution better than 1 MeV (FWHM). The present experiment was designed to make full use of the virtual photon flux, which peaks at very forward angles, by detecting scattered electrons at 0 degrees. Scattered positive kaons were also detected near 0 degrees, where the cross section of the kaon photo-production is maximized. This unique kinematical configuration was realized with the HyperNuclear Spectrometer System (HNSS), which consisted of the Short-Orbit Spectrometer, the Enge Split-Pole Spectrometer, and the splitter magnet. The $12top{Λ}$B mass spectrum was measured in the 12C(e,e'K+)$12top{Λ}$ reaction with 0.9 MeV (FWHM) energy resolution. The averaged binding energy of the $12top{Λ}$B ground state doublet was obtained to be 11.7 ± 0.1 (statistical) ± 0.3 (systematic) MeV, which is consistent with emulsion data. The general spectral structure of the 12C(e,e'K+) $12top{Λ}$B reaction was found to be similar to that of the 12C(?+,K+)$12top{Λ}$C reaction, showing characteristic peaks corresponding to sLambda and pLambda orbits, as well as a few core-excited states. The cross section of the $12top{Λ}$B ground state doublet was derived to be 117 ± 13 (statistical) ± 14 (systematic) nb/sr. The theoretical prediction of the cross section was consistent with the present result, validating DWIA calculation for hypernuclear yields. The present study proved the effectiveness of the (e,e'K+) reaction for future Lambda hypernuclear spectroscopy studies.
Download or read book Particle Physics written by Necia Grant Cooper and published by CUP Archive. This book was released on 1988-04-29 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explains the emergence of a profoundly new understanding of the fundamental forces of Nature.
Download or read book Technology of Liquid Helium written by Richard H. Kropschot and published by . This book was released on 1968 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Publications of Los Alamos Research written by Los Alamos National Laboratory and published by . This book was released on 1985 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Brookhaven Highlights written by and published by . This book was released on 1970-07 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proton Proton Bremsstrahlung written by K. W. Rothe and published by . This book was released on 1966 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Introduction to the Standard Model and Beyond written by Stuart Raby and published by Cambridge University Press. This book was released on 2021-07-08 with total page 650 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Standard Model of particle physics is an amazingly successful theory describing the fundamental particles and forces of nature. This text, written for a two-semester graduate course on the Standard Model, develops a practical understanding of the theoretical concepts it's built upon, to prepare students to enter research. The author takes a historical approach to demonstrate to students the process of discovery which is often overlooked in other textbooks, presenting quantum field theory and symmetries as the necessary tools for describing and understanding the Standard Model. He develops these tools using a basic understanding of quantum mechanics and classical field theory, such as Maxwell's electrodynamics, before discussing the important role that Noether's theorem and conserved charges play in the theory. Worked examples feature throughout the text, while homework exercises are included for the first five parts, with solutions available online for instructors. Inspired by the author's own teaching experience, suggestions for independent research topics have been provided for the second-half of the course, which students can then present to the rest of the class.
Download or read book The Atom and Its Nucleus written by George Gamow and published by . This book was released on 1964 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Speaking Private Authority written by Roberto J. Flores and published by Rowman & Littlefield. This book was released on 2020-05-26 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: Speaking Private Authority: The Construction of Sustainability in Forests and Fisheries expands upon current understandings of the emergent global phenomenon that is private authority. As private authority is becoming increasingly important in the conduct of global governance, broadening our collective understanding of it will prove beneficial. Roberto J. Flores argues that private actors are not simply outgrowths of existent social structures or material conditions, rather they are purposive agents strategically pursuing an agenda. Therefore, explaining private authority requires an examination of the constitutive elements that underlie this social phenomenon––to which the author applies an analytical framework that combines social network theory with discourse analysis. The author applies these tools to two cases taken from the environmental sector––forests and fisheries—and finds that as environmental politics takes on an increasingly networked character the actors that are best able to generate and wield private authority are those that strategically place themselves in-between networks through the construction of discursive nodal points around which competing actors are forced to converge—at the level of identity. The case studies specifically look at how particular actors leveraged construction of the sustainable development concept in order to strategically place themselves in advantageous positions for exercising private authority.
Download or read book Measurements of Neutrino Mass written by Fernando Ferroni and published by IOS Press. This book was released on 2009 with total page 493 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This volume offers a valuable insight into various aspects of the ongoing work directed at measuring neutrino mass. It took twenty years to refute the assertions of Bethe and Peierls that neutrinos were not observable, but it has since been realised that much can be learnt from these particles. The moral is, as Fiorini argues here, that the study of neutrinos was and remains demanding but rewarding. Subjects addressed in this volume include: clarifying the meaning of the Klapdor-Kleingrothaus results, probing the Majorana nature of neutrinos, observing lepton number violating effects for the first time, studying the end point of the spectrum in the search for neutrino masses and speculating whether it is possible to measure neutrino masses in cosmology. Lectures are enriched with rich historical overviews and valuable introductory material. Attention is also given to theoretical topics such as the evolution of the concept of mass in particle physics, a status report on neutrino oscillations and current discussion on neutrino masses. The reader is further reminded that neutrino masses may also have some bearing on the very origin of the matter among us, and have many deep links with other important lines of current physics research." --Book Jacket.
Download or read book Publications of LASL Research written by Los Alamos Scientific Laboratory and published by . This book was released on 1972 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Gamma Ray Observatory written by and published by . This book was released on 1991 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Erwin Schrodinger and the Quantum Revolution written by John Gribbin and published by Random House. This book was released on 2012-03-29 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Erwin Schrödinger was an Austrian physicist famous for his contribution to quantum physics. He won the Nobel Prize in 1933 and is best known for his thought experiment of a cat in a box, both alive and dead at the same time, which revealed the seemingly paradoxical nature of quantum mechanics. Schrödinger was working at one of the most fertile and creative moments in the whole history of science. By the time he started university in 1906, Einstein had already published his revolutionary papers on relativity. Now the baton of scientific progress was being passed to a new generation: Werner Heisenberg, Paul Dirac, Niels Bohr, and of course, Schrödinger himself. In this riveting biography John Gribbin takes us into the heart of the quantum revolution. He tells the story of Schrödinger's surprisingly colourful life (he arrived for a position at Oxford University with both his wife and mistress). And with his trademark accessible style and popular touch, he explains the fascinating world of quantum mechanics, which underpins all of modern science.
