*  Isotopes | Encyclopedia.com
Neutron-rich nuclei undergo beta emission, which decreases the numbers of protons in the nucleus. Neutron-poor nuclei typically ... the nucleus of tritium, along with a single proton. The triton and deuteron would then be fused to create a helium nucleus, ... who used radium and beryllium powder to construct a neutron source for making new radioactive materials. Fermi and his ... TRITIUM.. Whereas deuterium has a single neutron, tritium-as its mass number of 3 indicates-has two. And just as deuterium has ...
  https://www.encyclopedia.com/science-and-technology/physics/physics/isotopes
*  Fukushima's Legacy: Understanding the Difference Between Nuclear Radiation & Contamination | Peak Prosperity
A typical example would be the capture of a neutron by a hydrogen nucleus consisting of a single proton, which is then ripped ... Alpha particles. These are fast moving nuclei of helium, meaning that they consist of two protons and two neutrons. The ... For our purposes, the isotopes most commonly associated with nuclear reactions are in the range of 19 KeV (tritium) to 600 KeV ... Common alpha emitters include radium, radon, polonium, uranium, and thorium.. Beta particles are electrons ejected during ...
  https://www.peakprosperity.com/blog/84656/fukushimas-legacy-understanding-difference-between-nuclear-radiation-contamination
*  Tritium - Wikipedia
Tritium is also produced in heavy water-moderated reactors whenever a deuterium nucleus captures a neutron. This reaction has a ... while lithium-7 is split into helium-4, tritium, and one neutron. As these reactions occur, the fusion stage is compressed by ... Tritium has replaced radioluminescent paint containing radium in this application, which can cause bone cancer and has been ... though still small compared to the total number of nuclei in the pit. Before detonation, a few grams of tritium-deuterium gas ...
  https://en.wikipedia.org/wiki/Tritium
*  Appendix A, The Basics of Radiation and Health, "KILLING OUR OWN", 1982
... including strontium 90 and tritium. *Neutron emissions occur when the nucleus of an atom is struck by a particle that causes ... Alpha particles have the same nucleus as the helium atom but lack the two electrons that make helium stable. Alpha particles ... The neutron trips a reaction within the fissionable nuclei that causes them to split apart, releasing large quantities of ... The curie (Ci) is so named to honor Marie Curie, who discovered radium. A curie refers to the amount of radioactivity in a gram ...
  https://ratical.org/radiation/KillingOurOwn/KOOappA.html
*  Helium - Wikipedia
... the alpha particles that emerge are fully ionized helium-4 nuclei. Helium-4 is an unusually stable nucleus because its nucleons ... Some stable helium-3 (2 protons and 1 neutron) is produced in fusion reactions from hydrogen, but it is a very small fraction ... Radium. Actinium. Thorium. Protactinium. Uranium. Neptunium. Plutonium. Americium. Curium. Berkelium. Californium. Einsteinium ... "Helium Fundamentals". MantlePlumes.org. Retrieved 2008-07-20.. *^ Novick, Aaron (1947). "Half-Life of Tritium". Physical ...
  https://en.wikipedia.org/wiki/Helium
*  Basic Physics of Nuclear Medicine/Atomic & Nuclear Structure - Wikibooks, open books for an open world
Let us take the case of the helium-4 nucleus as an example. This nucleus contains two protons and two neutrons so that in terms ... Classification of Nuclei[edit]. The term Atomic Number is defined in nuclear physics as the number of protons in a nucleus and ... a second isotope consisting of a nucleus containing a proton and a neutron orbited by one electron, ... The third isotope commonly called tritium is identified as:. 1. 3. H. {\displaystyle {}_{1}^{3}\mathbf {H} }. The same ...
  https://en.wikibooks.org/wiki/Basic_Physics_of_Nuclear_Medicine/Atomic_%26_Nuclear_Structure
*  Ernest Rutherford facts, information, pictures | Encyclopedia.com articles about Ernest Rutherford
Boltwood spent a year with him, during which time they redetermined more accurately the rate of production of helium by radium ... But did the alpha merely bounce off the target nucleus, which then emitted a proton, or did it combine with this nucleus? While ... of the existence of the neutron. Rutherford had long considered the neutron a possibility and in his 1920 Bakerian lecture to ... With its charge of +2, the alpha particle was too strongly repelled by the large numbers of positive charges on the nuclei of ...
  https://www.encyclopedia.com/people/history/british-and-irish-history-biographies/ernest-rutherford
*  Atom - Wikipedia
... causing a nucleus to split into two smaller nuclei-usually through radioactive decay. The nucleus can also be modified through ... one neutron (deuterium), two neutrons (tritium) and more than two neutrons. The known elements form a set of atomic numbers, ... Most of the helium in the crust of the Earth (about 99% of the helium from gas wells, as shown by its lower abundance of helium ... such as radium from uranium), or else as products of natural energetic processes on Earth, such as cosmic ray bombardment (for ...
  https://en.wikipedia.org/wiki/Atom
*  WikiPremed MCAT Course - Nuclear Physics
Free neutron. A free neutron is a neutron that exists outside of an atomic nucleus. ... alpha process is the process by which three helium nuclei are transformed into carbon in stellar interiors having a high helium ... Tritium. Tritium is a radioactive isotope of hydrogen with a nucleus containing one proton and two neutrons. ... The curie is a unit of radioactivity which is roughly the activity of 1 gram of the radium isotope 226Ra. ...
  https://www.wikipremed.com/mcat_course.php?code=010701
*  Isotope - Wikipedia
... and even-proton-odd-neutron nuclides. Odd-proton-odd-neutron nuclei are the least common. The 148 even-proton, even-neutron (EE ... helium-3, helium-4, carbon-12, carbon-14, uranium-235 and uranium-239). When a chemical symbol is used, e.g. "C" for carbon, ... A nuclide is a species of an atom with a specific number of protons and neutrons in the nucleus, for example carbon-13 with 6 ... This is most pronounced by far for protium (1 H ), deuterium (2 H ), and tritium (3 H ), because deuterium has twice the mass ...
  https://en.wikipedia.org/wiki/Isotope
*  Nuclear fuel cycle - Wikipedia
The atomic nucleus of U-235 will nearly always fission when struck by a free neutron, and the isotope is therefore said to be a ... Radium's longest lived isotope, at 1,600 years, thus merits the element's inclusion here. Specifically from thermal neutron ... In addition to the emission of iodine the noble gases and tritium are released from the fuel when it is dissolved. It has been ... Fissile nuclei, like Uranium-235, Plutonium-239 and Uranium-233 respond well to delayed neutrons and are thus important to keep ...
  https://en.wikipedia.org/wiki/Nuclear_fuel_cycle
*  NOTES: Class IX, CHEMISTRY, "Atomic Structure"
It has one proton and one neutron in its nucleus. It has one electron revolving around its nucleus. It is denoted by symbol D. ... 1. They are helium nuclei. They are doubly positively charged, He2+.. 2. They move with speed equal to the 1/10th of the ... Tritium. Radioactive hydrogen is called tritium. It is denoted by symbol T. The number of tritium isotope is one in ten ... The elements which omit these rays are called radioactive elements like Uranium, Thorium, Radium etc. There are about 40 ...
  http://all-notes.blogspot.com/2011/06/class-ix-chemistry-atomic-structure.html
*  NOTES: 06/01/2011 - 07/01/2011
It has one proton and one neutron in its nucleus. It has one electron revolving around its nucleus. It is denoted by symbol D. ... 1. They are helium nuclei. They are doubly positively charged, He2+.. 2. They move with speed equal to the 1/10th of the ... Tritium. Radioactive hydrogen is called tritium. It is denoted by symbol T. The number of tritium isotope is one in ten ... Radium. Properties of Group II. 1. They are mono atomic.. 2. They exist in solid state.. 3. Outer most shell of these elements ...
  http://all-notes.blogspot.com/2011/06/
*  In the Beginning: Compelling Evidence for Creation and the Flood - References and Notes
... so it is not possible to build nuclei heavier than helium by adding neutrons or protons to helium (4He) nuclei, or by fusing ... Either the large nucleus splits after being bombarded by another particle, such as a neutron, or the nucleus splits ... radium-221, radium-222, radium-223, actinium-223, radium-224, actinium-225, and radium-226. ... How is 3He produced? Nuclear reactions first produce 3H (tritium), either as a rare fission product, or in one of the following ...
  https://creationscience.com/onlinebook/Radioactivity7.html
*  Basic Nuclear Concepts - PDF
... we present a basic description of atomic nuclei, the stored energy contained within them, their occurrence and stability Basic ... FUSION NEUTRON DEUTERIUM HELIUM TRITIUM. FUSION AND FISSION THE SUN Every second, the sun converts 500 million metric tons of ... The mass of a nucleus Energy generation in stars which nuclei are stable which nuclei exist in principle 1 SOHO, 171A Fe ... 1) By what process does thorium-230 decay to radium-226? More information ...
  http://docplayer.net/21183892-Basic-nuclear-concepts.html
*  Radiation protection - Wikipedia
This includes solar wind, cosmic radiation, and neutron flux in nuclear reactors. Alpha particles (helium nuclei) are the least ... X-ray and gamma radiation are best absorbed by atoms with heavy nuclei; the heavier the nucleus, the better the absorption. In ... Examples were radium enema treatments, and radium-containing waters to be drunk as tonics. Marie Curie protested against this ... contaminants such as radon ingestion of radioactive contamination in food or liquids absorption of vapours such as tritium ...
  https://en.wikipedia.org/wiki/Radiation_protection
*  Chemical element - Wikipedia
... helium nuclei), resulting in an alternatingly larger abundance of elements with even atomic numbers (these are also more stable ... All carbon atoms have 6 protons in the nucleus, but they can have either 6, 7, or 8 neutrons. Since the mass numbers of these ... Of these 11 transient elements, 5 (polonium, radon, radium, actinium, and protactinium) are relatively common decay products of ... tritium). This convention is easier to use in chemical equations, replacing the need to write out the mass number for each atom ...
  https://en.wikipedia.org/wiki/Chemical_element
*  Radioactive Isotopes - Physics Video by Brightstorm
Radioactive isotopes have unstable ratios of protons to neutrons in their atomic nuclei. Radioactive isotopes are important ... And somewhere on that chain, you get radium 226. Radium 226 is the type of radium that was originally isolated by the curies in ... The reason plutonium 239 is very very very important is that it's fissile and that means that you can take a neutron shoot it ... This guy which is called tritium is very important in thermal nuclear devices and in fusion studies and he decays in about ...
  https://www.brightstorm.com/science/physics/nuclear-physics/radioactive-isotopes/
*  Nuclear fission - Wikipedia
... plus helium-6 nuclei, and tritons (the nuclei of tritium). The ternary process is less common, but still ends up producing ... to create a helium-3 nucleus. After English physicist James Chadwick discovered the neutron in 1932, Enrico Fermi and his ... Marie Curie had been separating barium from radium for many years, and the techniques were well-known. According to Frisch: Was ... When a uranium nucleus fissions into two daughter nuclei fragments, about 0.1 percent of the mass of the uranium nucleus ...
  https://en.wikipedia.org/wiki/Nuclear_fission
*  Beverly Hills High School Supplemental Report on Radiological Surveys. Prepared by - PDF
... helium nuclei 2. Stable nuclei (that is, nonradioactive nuclei) have mass ... a. proton d. electron b. nucleus e. neutron c. atom 1. the smallest particle of an element that retains the properties of ... Tritium and carbon-14 are examples of these. Cosmogenic radioactive materials are also extremely widespread, with tritium ... which include radium-226 (Ra-226) and radon-222 (Rn-222) from the U-238, and radium-228 (Ra-228) and radon-220 (Rn-220) from ...
  http://docplayer.net/24844170-Beverly-hills-high-school-supplemental-report-on-radiological-surveys-prepared-by.html
*  Ionizing radiation - Wikipedia
... charged helium nuclei) have no natural sources on the earth. In space, however, very high energy protons, helium nuclei, and ... At the end of its path, the neutron is captured by a nucleus in an (n,γ)-reaction that leads to the emission of a neutron ... Radon-222 is a gas produced by the decay of radium-226. Both are a part of the natural uranium decay chain. Uranium is found in ... tritium), airport X-ray systems, smoke detectors (americium), electron tubes, and gas lantern mantles (thorium). Of lesser ...
  https://en.wikipedia.org/wiki/Ionizing_radiation
*  Radioactive decay - Wikipedia
... helium nucleus). This is the most common process of emitting nucleons, but highly excited nuclei can eject single nucleons, or ... Highly excited neutron-rich nuclei, formed as the product of other types of decay, occasionally lose energy by way of neutron ... polonium and radium. Except for the radioactivity of radium, the chemical similarity of radium to barium made these two ... such as tritium) have long since decayed. Isotopes of elements heavier than boron were not produced at all in the Big Bang, and ...
  https://en.wikipedia.org/wiki/Radioactive_decay
*  Nuclear and Radiation Glossary - Canadian Nuclear Safety Commission
neutron). neutron capture: A type of nuclear reaction in which an atomic nucleus absorbs a free neutron and they merge to form ... An alpha particle is a helium nucleus. (particules alpha). atom: The unit of matter consisting of a single nucleus surrounded ... Tritium is a radioactive isotope of hydrogen having two neutrons and one proton in its nucleus; hydrogen, by comparison, has ... alpha particles: Positively charged particles consisting of two protons and two neutrons that are emitted by the nuclei of ...
  http://nuclearsafety.gc.ca/eng/resources/radiation/introduction-to-radiation/nuclear-and-radiation-glossary.cfm