Related Experiment Video
Updated: May 24, 2026
10:42
Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
Published on: May 3, 2019
Q value and half-lives for the double-β-decay nuclide 110Pd
Physical Review Letters
|March 10, 2012
Summary
Precise measurements of the 110Pd double-beta decay Q value confirm its potential for studying neutrinoless decay. This research refines half-life calculations and highlights 110Pd as a prime candidate for future investigations.
Area of Science:
- Nuclear Physics
- Particle Physics
- Atomic Physics
Background:
- Double-beta decay is a rare nuclear process that can provide insights into fundamental physics.
- Understanding the Q value and decay modes is crucial for experimental searches.
- Palladium-110 (110Pd) is a promising isotope due to its high natural abundance.
Purpose of the Study:
- To precisely measure the Q value of the 110Pd double-beta decay.
- To recalculate phase-space factors and nuclear matrix elements for 110Pd decay.
- To reevaluate the half-life of the two-neutrino decay mode of 110Pd.
Main Methods:
- Utilizing the ISOLTRAP Penning-trap mass spectrometer for high-precision mass measurements.
- Performing theoretical calculations for nuclear matrix elements.
- Combining experimental Q value with theoretical calculations to determine decay properties.
Main Results:
- The 110Pd double-beta decay Q value was determined to be 2017.85(64) keV, a 14 keV shift from previous literature values.
- The new Q value is 17 times more precise than existing measurements.
- The expected half-life for the two-neutrino decay mode was reevaluated to be 1.5(6)×10^20 yr.
Conclusions:
- The refined Q value and improved precision enhance the potential of 110Pd for double-beta decay studies.
- 110Pd is confirmed as an excellent candidate for investigating both two-neutrino and neutrinoless double-beta decay.
- This work provides crucial data for future experimental and theoretical endeavors in nuclear and particle physics.
More Related Videos
09:49A Whole Body Dosimetry Protocol for Peptide-Receptor Radionuclide Therapy (PRRT): 2D Planar Image and Hybrid 2D+3D SPECT/CT Image Methods
Published on: April 24, 2020
08:55A Practical Guide for the Production and PET/CT Imaging of 68Ga-DOTATATE for Neuroendocrine Tumors in Daily Clinical Practice
Published on: April 17, 2019
Related Concept Videos
02:48Radioactive Decay and Radiometric Dating
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.
03:18Nuclear Stability
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 in the...
To hold positively charged protons together in the...
03:18Radioactivity and Nuclear Equations
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...
A nuclide of an element has a specific number of protons and...
03:23Types of Radioactivity
The most common types of radioactivity are α decay, β decay, γ decay, neutron emission, and electron capture.
Alpha (α) decay is the emission of an α particle from the nucleus. For example, polonium-210 undergoes α decay:
Alpha (α) decay is the emission of an α particle from the nucleus. For example, polonium-210 undergoes α decay:
02:42Half-life of a Reaction
The half-life of a reaction (t1/2) is the time required for one-half of a given amount of reactant to be consumed. In each succeeding half-life, half of the remaining concentration of the reactant is consumed. For example, during the decomposition of hydrogen peroxide, during the first half-life (from 0.00 hours to 6.00 hours), the concentration of H2O2 decreases from 1.000 M to 0.500 M. During the second half-life (from 6.00 hours to 12.00 hours), the concentration decreases from 0.500 M to...
01:14Atomic Nuclei: Nuclear Spin State Population Distribution
Near absolute zero temperatures, in the presence of a magnetic field, the majority of nuclei prefer the lower energy spin-up state to the higher energy spin-down state. As temperatures increase, the energy from thermal collisions distributes the spins more equally between the two states. The Boltzmann distribution equation gives the ratio of the number of spins predicted in the spin −½ (N−) and spin +½ (N+) states.