Nuclear Physics
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# Nuclear Physics

Selected contemporary works in Nuclear Physics
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## Neutron Star Theory Group at UNAM

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## Modern compact accelerators of cyclotron type for medical applications

Ion beam therapy and hadron therapy are types of external beam radiotherapy. Recently, the vast majority of patients have been treated with protons and carbon ions. Typically, the types of accelerator
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## Effects of a realistic tensor force on nuclear quadrupole deformation near the shore'' of the island of inversion

The M3Y-type semirealistic interaction is applied to deformed nuclei for the first time. Constrained Hartree-Fock calculations assuming axial symmetry are implemented for the $N=20$ isotones $^{30}\mathrm{Ne}$, $^{32}\mathrm{Mg}$, $^{34}\mathrm{Si}$ and the $N=28$ isotones $^{40}\mathrm{Mg}$, $^{42}\mathrm{Si}$, $^{44}\mathrm{S}$ with the M3Y-P6 interaction. The results match the experimental data well. Effects of the realistic tensor force on the nuclear quadrupole deformation are investigated in relation to the loss of the $N=20$ and 28 magic numbers. The tensor force is confirmed to favor the deformation for the $N=28$ nuclei owing to the closure of the $jj$ shell (i.e., $n0{f}_{7/2}$), while favoring the sphericity for the $N=20$ nuclei owing to the $\ensuremath{\ell}s$ closure of $N=20$.
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## Japan’s $320 Million Gamble at Fukushima: An Underground Ice Wall The project is designed to keep water out of the damaged reactor buildings at the nuclear power plant, and radioactive water from reaching the Pacific. Critics say it may not work. No comment yet.  Scooped by Theo J. Mertzimekis ## Looking through the crystal ball at nuclear structure physics Nuclei are at the core of everything in day to day life. Understanding how they work and interact is a fundamental science vital to applications in the real world as well as pure research. No comment yet.  Scooped by Theo J. Mertzimekis ## [1608.07556] Radiation Hardness of 30 cm Long CsI(Tl) Crystals No comment yet.  Scooped by Theo J. Mertzimekis ## Iran releases physicist after five years in jail Omid Kokabee, who became seriously ill while serving time on controversial treason charges, will now allowed to leave the country. No comment yet.  Scooped by Theo J. Mertzimekis ## Anthropogenic and naturally occurring radionuclide content in near surface air in Cáceres (Spain) No comment yet.  Scooped by Theo J. Mertzimekis ## The ROSPHERE γ-ray spectroscopy array No comment yet.  Scooped by Theo J. Mertzimekis ## Completing the nuclear reaction puzzle of the nucleosynthesis of 92Mo One of the greatest questions for modern physics to address is how elements heavier than iron are created in extreme astrophysical environments. A particularly challenging part of that question is the creation of the so-called$p$-nuclei, which are believed to be mainly produced in some types of supernovae. The lack of needed nuclear data presents an obstacle in nailing down the precise site and astrophysical conditions. In this work, we present for the first time measurements on the nuclear level density and average$\ensuremath{\gamma}$strength function of$^{92}\mathrm{Mo}$. State-of-the-art$p$-process calculations systematically underestimate the observed solar abundance of this isotope. Our data provide stringent constraints on the$^{91}\mathrm{Nb}(p,\ensuremath{\gamma})^{92}\mathrm{Mo}$reaction rate, which is the last unmeasured reaction in the nucleosynthesis puzzle of$^{92}\mathrm{Mo}$. Based on our results, we conclude that the$^{92}\mathrm{Mo}$abundance anomaly is not due to the nuclear physics input to astrophysical model calculations. No comment yet.  Scooped by Theo J. Mertzimekis ## The deuteron too poses a mystery Your entry into the neutron world. No comment yet.  Scooped by Theo J. Mertzimekis ## Painting Dose: the ART of Radiation No comment yet.  Scooped by Theo J. Mertzimekis ## Beamline Tests Show Progress in Detector Development - News from the neutron centers - News - Neutronsources Your entry into the neutron world. No comment yet.  Scooped by Theo J. Mertzimekis ## Virtual Journal of Nuclear Astrophysics No comment yet.  Scooped by Theo J. Mertzimekis ## The Nuclotron and Nica control system development status The Nuclotron is a 6 GeV/n superconducting proton synchrotron operating at JINR, Dubna since 1993. It will be the core of the future accelerating complex NICA which is under construction now. The TANG No comment yet.  Scooped by Theo J. Mertzimekis ## Measurement of picosecond lifetimes in neutron-rich Xe isotopes Background: Lifetimes of nuclear excited states in fission fragments have been studied in the past following isotope separation, thus giving access mainly to the fragments' daughters and only to long-lived isomeric states in the primary fragments. For the first time now, short-lived excited states in the primary fragments, produced in neutron-induced prompt fission of$^{235}\mathrm{U}$and$^{241}\mathrm{Pu}$, were studied within the EXILL campaign at the intense neutron-beam facility of the Institute Laue-Langevin in Grenoble. No comment yet.  Scooped by Theo J. Mertzimekis ## Researchers peel back another layer of chemistry with 'tender' X-rays Scientists can now directly probe a previously hard-to-see layer of chemistry thanks to a unique X-ray toolkit developed at the Department of Energy's Lawrence Berkeley National Laboratory (Berke.. No comment yet.  Scooped by Theo J. Mertzimekis ## Lifetime measurement of the 4+ state of 58Ni with the recoil distance method The quadrupole transition rate for the${4}_{1}^{+}\ensuremath{\rightarrow}{2}_{1}^{+}$transition of$^{58}\mathrm{Ni}$was determined from an application of the recoil distance method with the Gamma-Ray Energy Tracking In-beam Nuclear Array (GRETINA). The present result of the$B(E2;{4}_{1}^{+}\ensuremath{\rightarrow}{2}_{1}^{+})$was found to be${50}_{\ensuremath{-}6}^{+11}\phantom{\rule{4pt}{0ex}}{e}^{2}\phantom{\rule{0.16em}{0ex}}{\mathrm{fm}}^{4}\$, which is about three times smaller than the literature value, indicating substantially less collectivity than previously believed. Shell model calculations performed with the GXPF1A effective interaction agree with the present data and the validity of the standard effective charges in understanding collectivity in the nickel isotopes is discussed.
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## Production of nuclear sources and nuclear batteries by proton irradiation

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## Cloud server an avenue for foreign nationals to use certain U.S. nuclear codes

A cloud based server at a national lab allows researchers from across the globe access to computer codes that could help them design safer nuclear reactors, or safely transport nuclear material. Opened for business in April of last year by the Radiation Safety Information Computational Center, the server allows its users to work on projects “in the interests of the U.S. government.” So far, only 80 people have access, but Timothy Valentine, director of the center, hopes that will soon expand. The center is teaming up with Nuclear Energy Agency’s Data Bank to establish a training workshop in late fall or early winter for those who usually have limited access to the code, particularly Russian citizens.
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## Basic MRI physics for radiotherapy physicists

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## Performance of the Versatile Array of Neutron Detectors at Low Energy (VANDLE)

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## ‘Universal’ representation of HPGe detector efficiencies

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## Utilization of 134Cs/137Cs in the environment to identify the reactor units that caused atmospheric releases during the Fukushima Daiichi accident

The Fukushima Daiichi nuclear power reactor units that generated large amounts of airborne discharges during the period of March 12–21, 2011 were identified individually by analyzing the combination of measured 134Cs/137Cs depositions on ground surfaces and atmospheric transport and deposition simulations.
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