Gamma-ray spectroscopy of neutron-rich fission fragments
Alahari, Navin Grand Accélérateur National d'Ions Lourds, Caen, France.
Rejmund, Maurycy Grand Accélérateur National d'Ions Lourds, Caen, France.
- Probing nuclei in energy-spin-isospin space
- Links to Primary Literature
- Additional Readings
In a nuclear fission reaction, a large number of fission fragments are produced in various discrete quantum excited states. The characterization of these excited states along different isotopic chains with increasing mass numbers, for various elements, is necessary for understanding, microscopically, the evolution of the individual and collective motion of the nucleons (the intrinsic structure) in a complex nuclear many-body system as a function of its temperature (excitation energy), rotation (spin), and neutron-proton asymmetry (isospin). However, such a characterization for each set of isotopes is experimentally very challenging. The traditional approach uses correlations among the coincident characteristic gamma rays emitted by a given fission fragment, or correlations with the gamma rays emitted by its complementary partner (or partners), to identify the excited states of interest. In the experiments that will be discussed in this article, the sensitivity of the method of using prompt gamma rays for the spectroscopy of fission fragments is extended toward more neutron-rich exotic nuclei (nuclei with ratios of neutron number N to atomic number Z much larger than those found in nature), lying farther away from the valley of stability. This is done by measuring gamma rays in coincidence with the detection in a large-acceptance spectrometer of fission fragments that are isotopically identified by their atomic (Z) and mass (A) numbers.
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Contributors include more than 9000 highly qualified scientists and 43 Nobel Prize winners.
MORE THAN 8700 articles covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 19,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information