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Related Concept Videos

Nuclear Stability03:18

Nuclear Stability

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Protons and neutrons, collectively called nucleons, are packed together tightly in a nucleus. With a radius of about 10−15 meters, a nucleus is quite small compared to the radius of the entire atom, which is about 10−10 meters. Nuclei are extremely dense compared to bulk matter, averaging 1.8 × 1014 grams per cubic centimeter. If the earth’s density were equal to the average nuclear density, the earth’s radius would be only about 200 meters.
To hold positively charged protons together...
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Radioactivity and Nuclear Equations03:18

Radioactivity and Nuclear Equations

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Nuclear chemistry is the study of reactions that involve changes in nuclear structure. The nucleus of an atom is composed of protons and, except for hydrogen, neutrons. The number of protons in the nucleus is called the atomic number (Z) of the element, and the sum of the number of protons and the number of neutrons is the mass number (A). Atoms with the same atomic number but different mass numbers are isotopes of the same element.
A nuclide of an element has a specific number of protons and...
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Nuclear Transmutation03:20

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Nuclear transmutation is the conversion of one nuclide into another. It can occur by the radioactive decay of a nucleus, or the reaction of a nucleus with another particle. The first manmade nucleus was produced in Ernest Rutherford’s laboratory in 1919 by a transmutation reaction, the bombardment of one type of nuclei with other nuclei or with neutrons. Rutherford bombarded nitrogen-14 atoms with high-speed α particles from a natural radioactive isotope of radium and observed...
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Radioactive Decay and Radiometric Dating02:48

Radioactive Decay and Radiometric Dating

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Radioactivity is a spontaneous disintegration of an unstable nuclide and is a random process, as all the nuclei in the sample do not decay simultaneously. The number of disintegrations per unit time is called the activity (A), which is directly proportional to the number of nuclei in the sample. The decay constant (λ) is an average probability of decay per nucleus in unit time.
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Nuclear Binding Energy02:13

Nuclear Binding Energy

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The difference between the calculated and experimentally measured masses is known as the mass defect of the atom. In the case of helium-4, the mass defect indicates a “loss” in mass of 4.0331 amu – 4.0026 amu = 0.0305 amu. The loss in mass accompanying the formation of an atom from protons, neutrons, and electrons is due to the conversion of that mass into energy that is evolved as the atom forms. The nuclear binding energy is the energy produced when the atoms’ nucleons are bound...
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Types of Radioactivity03:23

Types of Radioactivity

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The most common types of radioactivity are α decay, β decay, γ decay, neutron emission, and electron capture.
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Related Experiment Video

Updated: Feb 20, 2026

Separation of Uranium and Thorium for 230Th-U Dating of Submarine Hydrothermal Sulfides
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Separation of Uranium and Thorium for 230Th-U Dating of Submarine Hydrothermal Sulfides

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230U nuclear decay data evaluation.

Aurelian Luca1, Mihail-Răzvan Ioan1

  • 1Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, IFIN-HH Bucharest, 30 Reactorului Street, PO Box MG-6, Magurele, Ilfov County RO-077125, Romania.

Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine
|October 28, 2017
PubMed
Summary

The nuclear decay data for Uranium-230 (230U), crucial for targeted alpha therapy, has been evaluated. This comprehensive data includes half-life, decay energy, and emission characteristics, enhancing nuclear medicine applications.

Keywords:
(230)UAlpha-particleEvaluationNuclear decay data

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Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
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Area of Science:

  • Nuclear Physics
  • Radiochemistry
  • Nuclear Medicine

Background:

  • Uranium-230 (230U) is a key radionuclide for targeted alpha therapy.
  • Accurate nuclear decay data is essential for effective therapeutic applications.

Purpose of the Study:

  • To perform a comprehensive evaluation of the nuclear decay data for 230U.
  • To provide updated data for inclusion in the NUCLEIDE database.

Main Methods:

  • Utilized the Decay Data Evaluation Project (DDEP) methodology.
  • Employed DDEP software tools for data analysis.

Main Results:

  • Evaluated half-life, decay energy, alpha-particle energies and probabilities.
  • Determined internal conversion coefficients, gamma-ray energies, and emission intensities.

Conclusions:

  • The evaluated nuclear decay data for 230U is now available.
  • These data will be integrated into the NUCLEIDE database, supporting nuclear medicine advancements.