Nuclear Physics
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Nuclear Physics
Selected contemporary works in Nuclear Physics
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Has a Hungarian physics lab found a fifth force of nature?

Has a Hungarian physics lab found a fifth force of nature? | Nuclear Physics | Scoop.it
Radioactive decay anomaly could imply a new fundamental force, theorists say.
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Complete identification of states in 208Pb below Ex=6.2 MeV

Complete identification of states in 208Pb below Ex=6.2 MeV | Nuclear Physics | Scoop.it
The ${}^{208}$Pb nucleus, with ``magic'' numbers of 82 protons and 126 neutrons, has been a touchstone for the study of nucleon motion in the nucleus for 65 years. This exhaustive study analyzes high-resolution particle reaction data obtained by this group (and others) over more than a decade, using a variety of reactions, to determine the first essentially complete level scheme of ${}^{208}$Pb up to about 6 MeV of excitation energy. Comparison with schematic shell model calculations tests the completeness of that model and provides estimates of missing ingredients.
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Structural Characterization of Iron Meteorites through Neutron Tomography

Structural Characterization of Iron Meteorites through Neutron Tomography | Nuclear Physics | Scoop.it
In this communication, we demonstrate the use of neutron tomography for the structural characterization of iron meteorites. These materials prevalently consist of metallic iron with variable nickel content. Their study and classification is traditionally based on chemical and structural analysis. The latter requires cutting, polishing and chemical etching of large slabs of the sample in order to determine the average width of the largest kamacite lamellae. Although this approach is useful to infer the genetical history of these meteorites, it is not applicable to small or precious samples. On the base of different attenuation coefficient of cold neutrons for nickel and iron, neutron tomography allows the reconstruction of the Ni-rich (taenite) and Ni-poor (kamacite) metallic phases. Therefore, the measure of the average width of the largest kamacite lamellae could be determined in a non-destructive way. Furthermore, the size, shape, and spatial correlation between kamacite and taenite crystals were obtained more efficiently and accurately than via metallographic investigation.
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Nuclear charge and neutron radii and nuclear matter: Trend analysis in Skyrme density-functional-theory approach

Nuclear charge and neutron radii and nuclear matter: Trend analysis in Skyrme density-functional-theory approach | Nuclear Physics | Scoop.it
Background: Radii of charge and neutron distributions are fundamental nuclear properties. They depend on both nuclear interaction parameters related to the equation of state of infinite nuclear matter and on quantal shell effects, which are strongly impacted by the presence of nuclear surface.
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Nuclear-level densities in the 49V and 57Co nuclei on the basis of evaporated-neutron spectra in (p, n) and (d, n) reactions

Nuclear-level densities in the 49V and 57Co nuclei on the basis of evaporated-neutron spectra in (p, n) and (d, n) reactions | Nuclear Physics | Scoop.it
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Dragonfly wings can track radiation doses after a nuclear mishap

Dragonfly wings can track radiation doses after a nuclear mishap | Nuclear Physics | Scoop.it
Measurements on insect wings can tell us how radiation has spread following a leak and the dose they were exposed to
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Metal Content in Early Galaxies Challenges Star Forming Theory

Metal Content in Early Galaxies Challenges Star Forming Theory | Nuclear Physics | Scoop.it
An International team led by scientists at ETH Zurich in Switzerland used the W. M. Keck Observatory to study the role of star formation rates i
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The European Spallation Source Appoints John Womersley Director General

The European Spallation Source Appoints John Womersley Director General | Nuclear Physics | Scoop.it
Your entry into the neutron world.
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Isomer Shift and Magnetic Moment of the Long-Lived 1/2+ Isomer in 79Zn: Signature of Shape Coexistence near 78Ni

Isomer Shift and Magnetic Moment of the Long-Lived 1/2+ Isomer in 79Zn: Signature of Shape Coexistence near 78Ni | Nuclear Physics | Scoop.it
Two different experiments observe nuclei with excited nuclear states that differ in shape from their ground states, so called shape coexistence. These nuclei lie close to the neutron-rich doubly-magic ${}^{78}$Ni region of the nuclear chart.
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Focus: How to Make an Intense Gamma-Ray Beam

Focus: How to Make an Intense Gamma-Ray Beam | Nuclear Physics | Scoop.it
Computer simulations show that blasting plastic with strong laser pulses could produce gamma rays with unprecedented intensity, good for fundamental physics experiments and possibly cancer treatments.
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Texas A&M, UT enter bid to run U.S. nuclear lab

Texas A&M, UT enter bid to run U.S. nuclear lab | Nuclear Physics | Scoop.it
The state's two largest university systems want to run the national laboratory in New Mexico that helped develop the first nuclear weapons. Texas A&M University and the University of Texas systems have entered a joint bid with the University of New Mexico and private companies Boeing and Battelle to take over management of Sandia National Laboratories in Albuquerque, one of three U.S. Department of Energy laboratories responsible for the nation's nuclear arsenal, the universities said Tuesday. The universities would conduct research, provide workforce training and independent peer review of the work done at Sandia - rooted primarily in the realm of national security and nuclear science. "In the Texas A&M and University of Texas systems, you have two of the largest, most prestigious university systems in the country with the expertise and resources necessary at Sandia, as you do with the University of New Mexico and its deep ties to Sandia, and I believe we bring an academic prowess that no one in this country can match," A&M Chancellor John Sharp said during the announcement in New Mexico. "Together, Texas and New Mexico can bring unprecedented research opportunities to our great state universities and would be honored to be entrusted with the management of one of our nation's premier national laboratories," Abbott said.
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Ulf-G. Meißner wins the 2016 EPS Lise Meitner Prize | e-EPS

Ulf-G. Meißner wins the 2016 EPS Lise Meitner Prize | e-EPS | Nuclear Physics | Scoop.it
The Lise Meitner Prize is awarded biennially by the European Physical Society (EPS) for outstanding work in the fields of experimental, theoretical or applied nuclear science. The 2016 Prize Laureate is: Prof. Ulf-G. Meißner, Universität Bonn and Forschungszentrum in Jülich, Germany
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Lessons Learned from the Fukushima Nuclear Accident for Improving Safety and Security of U.S. Nuclear Plants: Phase 2

Lessons Learned from the Fukushima Nuclear Accident for Improving Safety and Security of U.S. Nuclear Plants: Phase 2 | Nuclear Physics | Scoop.it
Download a PDF of "Lessons Learned from the Fukushima Nuclear Accident for Improving Safety and Security of U.S. Nuclear Plants" by the National Academies of Sciences, Engineering, and Medicine for free. Description: The U.S. Congress asked the National Academy of Sciences to conduct a technical study on lessons learned from the Fukushima Daiichi nuclear accident for improving safety and security of commercial nuclear power plants in the United States. This study was carried out in two phases: Phase 1, issued in 2014, focused on the causes of the Fukushima Daiichi accident and safety-related lessons learned for improving nuclear plant systems, operations, and regulations exclusive of spent fuel storage. This Phase 2 report focuses on three issues: (1) lessons learned from the accident for nuclear plant security, (2) lessons learned for spent fuel storage, and (3) reevaluation of conclusions from previous Academies studies on spent fuel storage.
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Deployment of a tower at the KM3NeT-It site - May 2016

Deployment of a tower at the KM3NeT-It site - May 2016
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Award enables research for more efficient accelerators

Award enables research for more efficient accelerators | Nuclear Physics | Scoop.it
Grigory Eremeev wants to double the efficiency of some of the most efficient particle accelerators being used for research. Now, the staff scientist at the Department of Energy's Thomas Jefferson..
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Three-dimensional #nuclear chart—understanding nuclear physics and #nucleosynthesis in stars

Three-dimensional #nuclear chart—understanding nuclear physics and #nucleosynthesis in stars | Nuclear Physics | Scoop.it
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Scientific Spy Craft: The Quest to Sabotage Nazi Germany's Atomic Bomb

Scientific Spy Craft: The Quest to Sabotage Nazi Germany's Atomic Bomb | Nuclear Physics | Scoop.it
An interview with Neal Bascomb, author of a new book on a little-known episode of military and scientific history
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Screening of nucleon electric dipole moments in nuclei

A partial screening of nucleon electric dipole moments (EDMs) in nuclear systems, which is related to the Schiff mechanism known for neutral atomic systems, is discussed. It is shown that the direct contribution from the neutron EDM to the deuteron EDM is partially screened by about 1% in a zero-range approximation calculation.
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Magnetic moment of the 13/2+ isomeric state in 69Cu: Spin alignment in the one-nucleon removal reaction

Magnetic moment of the 13/2+ isomeric state in 69Cu: Spin alignment in the one-nucleon removal reaction | Nuclear Physics | Scoop.it
We report on a new measurement of the $g$ factor of the ($13/2{}^{+}$) isomeric state in the neutron-rich nucleus $^{69}\mathrm{Cu}$. This study demonstrates the possibility of obtaining considerable nuclear spin alignment for multi-quasiparticle states in single-nucleon removal reactions. The time-dependent perturbed angular distribution (TDPAD) method was used to extract the gyromagnetic factor of the ($13/{2}^{+}$) $[{T}_{1/2}=351(14)$ ns] isomeric state of $^{69}\mathrm{Cu}$. Its $g$ factor was obtained as $g(13/{2}^{+})=0.248(9)$. The experimentally observed spin alignment for the state of interest was deduced as $A=\ensuremath{-}3.3(9)%$.
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