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A large enhancement in the production of neutron-rich projectile residues is observed in the reactions of a 25 MeV/nucleon 86Kr beam with the neutron rich 124Sn and 64Ni targets relative to the predictions of the EPAX parametrization of…

Nuclear Experiment · Physics 2009-11-10 G. A. Souliotis , M. Veselsky , G. Chubarian , L. Trache , A. Keksis , E. Martin , D. V. Shetty , S. J. Yennello

We investigate the possibilities of producing neutron-rich nuclides in projectile fission of heavy beams in the energy range of 20 MeV/nucleon expected from low-energy facilities. We report our efforts to theoretically describe the reaction…

Nuclear Experiment · Physics 2016-12-28 N. Vonta , G. A. Souliotis , W. D. Loveland , Y. K. Kwon , K. Tshoo , S. C. Jeong , M. Veselsky , A. Bonasera , A. Botvina

Nucleon exchange mechanism is investigated in the central collisions of ${}^{40}$Ca + ${}^{238}$U and ${}^{48}$Ca + ${}^{238}$U systems near the quasi-fission regime in the framework of the Stochastic Mean-Field (SMF) approach. Sufficiently…

Nuclear Theory · Physics 2016-01-12 S. Ayik , B. Yilmaz , O. Yilmaz

The multinucleon transfer reaction in the collisions of $^{40}$Ca+$^{124}$Sn at $E_{\textrm{c.m.}}=128.5$ MeV is investigated by using the improved quantum molecular dynamics model. The measured angular distributions and isotopic…

High-energy neutrinos and photons are complementary messengers, probing violent astrophysical processes and structural evolution of the Universe. X-ray and neutrino observations jointly constrain conditions in active galactic nuclei (AGN)…

High Energy Astrophysical Phenomena · Physics 2015-06-22 Idunn B. Jacobsen , Kinwah Wu , Alvina Y. L. On , Curtis J. Saxton

We derive an Ito-Langevin stochastic process that captures the time-dependent deviation from Poisson behavior of the noise detected from a general heterogeneous sub-critical neutron system. Using the probability generating function for the…

Statistical Mechanics · Physics 2025-05-27 Guy Gabrieli , Yair Shokef , Izhar Neder

Several experiments of neutron generation using high intensity laser sources, with a power exceeding 10^19W/cm^2 via TNSA (Target Normal Sheath Acceleration) or other similar methods, have been performed in the past years in different…

Optically thin accretion plasmas can reach ion temperatures $T_{\rm i} \geq 10^{10}$K and thus trigger nuclear reactions. Using a large nuclear interactions network, we studied the radial evolution of the chemical composition of the…

High Energy Astrophysical Phenomena · Physics 2019-04-03 Ervin Kafexhiu , Felix Aharonian , Maxim Barkov

In a fusion reactor, a proton and a neutron generated in previous reactions may again fuse with each other. Or they can in turn fuse with or be captured by an un-reacted deuteron. The average center-of-mass (COM) energy for such reaction is…

Nuclear Theory · Physics 2009-10-21 Nie Luo

The prediction of single particle level crossing phenomenon between $2p_{3/2}$ and $1f_{5/2}$ orbitals in $Ni$- and $Cu$-isotopic chains by the finite range simple effective interaction without requiring the tensor part is discussed. In…

Nuclear Theory · Physics 2022-08-31 P. Bano , X. Viñas , T. R. Routray , M. Centelles , M. Anguiano , L. M. Robledo

The nuclear fission process that occurs in the core of nuclear reactors results in unstable, neutron rich fission products that subsequently beta decay and emit electron anti-neutrinos. These reactor neutrinos have served neutrino physics…

Instrumentation and Detectors · Physics 2015-12-09 D. M. Asner , K. Burns , L. W. Campbell , B. Greenfield , M. S. Kos , J. L. Orrell , M. Schram , B. VanDevender , 1 L. S. Wood , D. W. Wootan

The quasi-fission mechanism hinders fusion of heavy systems because of a mass flow between the reactants, leading to a re-separation of more symmetric fragments in the exit channel. A good understanding of the competition between fusion and…

The reaction mechanism of projectile fragmentation at intermediate energies has been investigated observing the target dependence of the production cross sections of very neutron-rich nuclei. Measurement of longitudinal momentum…

A quantum-limited amplifier enables the amplification of weak signals while introducing minimal noise dictated by the principles of quantum mechanics. These amplifiers serve a broad spectrum of applications in quantum computing, including…

Quantum Physics · Physics 2024-06-26 Abdul Mohamed , Elham Zohari , Jarryd J. Pla , Paul E. Barclay , Shabir Barzanjeh

Astrophysical environments that reach temperatures greater than $\sim$ 100 keV can have significant neutrino energy loss via both plasma processes and nuclear weak interactions. We find that nuclear processes likely produce the…

High Energy Astrophysical Phenomena · Physics 2016-12-07 G. Wendell Misch , George M. Fuller

We calculate the structure and neutron content of neutrino-heated MHD winds driven from the surface of newly-formed magnetars (``proto-magnetars'') and from the midplane of hyper-accreting disks, two of the possible central engines for…

Astrophysics · Physics 2009-11-13 Brian D. Metzger , Todd A. Thompson , Eliot Quataert

We use the quasiparticle random phase approximation with a few Skyrme density functionals to calculate strength functions in the Jpi = 0+, 1-, and 2+ channels for even Ca, Ni, and Sn isotopes, from the proton drip line to the neutron drip…

Nuclear Theory · Physics 2009-11-11 J. Terasaki , J. Engel

During big bang nucleosynthesis, any injection of extra neutrons around the time of the $^7$Be formation, i.e. at a temperature of order $T \simeq 50$~keV, can reduce the predicted freeze-out amount of $^7$Be + $^7$Li that otherwise remains…

High Energy Physics - Phenomenology · Physics 2014-10-29 Alain Coc , Maxim Pospelov , Jean-Philippe Uzan , Elisabeth Vangioni

One of the most puzzling questions in neutrino physics is the origin of the excess at 5 MeV in the reactor antineutrino spectrum. In this paper, we explore the excess via the reaction $^{13}$C$(\overline{\nu}, \overline{\nu}^\prime…

High Energy Physics - Phenomenology · Physics 2019-04-01 Jeffrey M. Berryman , Vedran Brdar , Patrick Huber

The double neutron/proton ratio of nucleon emissions taken from two reaction systems using four isotopes of the same element, namely, the neutron/proton ratio in the neutron-rich system over that in the more symmetric system, has the…

Nuclear Theory · Physics 2009-11-11 Bao-An Li , Lie-Wen Chen , Gao-Chan Yong , Wei Zuo