When we think of particle physics, James Joyce isn’t usually the first name that springs to mind. And Joyce wasn’t on the mind of physicist Murray Gell-Man in 1963, when he proposed a name for his concept of an elementary particle of matter that is smaller than a proton or a neutr...
The existence and importance of the proton radius puzzle, observed via a Lamb shift measurement in muonic atoms, is discussed. Possible resolutions of the puzzle are discussed. Then the broader question of the meaning of the proton radius is addressed and examples of correctly defined charge ...
In chemistry and physics, a nucleon is either a proton or a neutron, considered in its role as a component of an atomic nucleus. The number of nucleons in a nucleus defines an isotope's mass number (nucleon number). Nucleus A central or essential part around which other parts are gathere...
An artist’s depiction of a neutron star merger. These mergers produce heavy elements like gold and platinum in abundance. Credit: Sonoma State University/A. Simonnet What Is Nucleosynthesis? Nucleosynthesis is the creation of new atomic nuclei, the centers of atoms that are made up of protons ...
(weakly interacting massive particles), which are thought to be ten to a hundred times the mass of a proton. However, their weak interactions with "normal" matter make them challenging to detect. Among these, neutralinos — hypothetical particles that are heavier and slower than neutrinos — ...
The OPERA event generator and the data tuning of nuclear re-interactions The production of soft p at large angles + n degrades the energy resolution of the experiment. Proton and neutron yields increase with the INC (DIS, ... D Autiero - Nuclear Physics B - Proceedings Supplements 被引量:...
What are the thermodynamic consequences of the stepwise conversion of a highly specific (consensus) protein-DNA interface to one that is nonspecific? How d... F De.,B Jp.,C Mw.,... - 《Journal of Molecular Biology》 被引量: 0发表: 1997年 加载更多研究点推荐 neutron-proton effective mass...
a proton and an electron can smash together to produce a neutron and a neutrino, and a neutron and a neutrino smashed together CAN also produce a proton and an electron (even if the chances of this happening in practice are very small). However, there are examples of the weak interaction...
Add one proton, one neutron, and one electron and you get an atom of beryllium (symbol Be).See how it works? In all atoms, the number of protons and the number of electrons is always the same. So nitrogen has 7 protons and 7 electrons, calcium has 20 protons and 20 electrons, and...
A free neutron is an unstable particle and beta decays into a proton with the emission of an electron. How much kinetic energy is available in the decay?What is the nuclear equation for _{36}Kr^{95} (beta decay).Determine the resulting nucleus...