Nuclear reaction cross-section measurements using AMS

Prof. Efrain Chavez Lomeli1, Dr. Luis Acosta, Dra. Libertad Barrón-Palos, Fis Arcadio Huerta, Dr Daniel J. Marín-Lámbarri, Dra Carmen G.  Méndez, Dr. Santiago Padilla, Dra. María G. Rodríguez-Ceja, Dr. Vijay R.  Sharma, Dra. Corina Solís

1Instituto De Fisica. UNAM, Coyoacán, México

We describe the use of AMS technique as a tool to measure nuclear reaction cross sections at the AMS (Accelerator Mass Spectrometry) at the LEMA (Laboratorio Nacional de Espectrometrometría de Masas con Aceleradores) facility at IFUNAM (Instituto de Física, Universidad Nacional Autónoma de México).
The 28Si(d,alpha)26Al, 9Be(n,gamma)10Be and the 14N(n,p)14C nuclear reactions are presented as examples.

The irradiation of targets both in accelerator facilities and nuclear reactors are described.
Sample preparation, before and after the irradiation is also described.
AMS measurements of 10Be, 14C and 26Al are described.
Data analysis and the extraction of absolute cross sections are described.

Raw data as well as the deduced final cross sections for the selected nuclear reactions are shown.

Success, advances and perspective for future work are presented for the selected nuclear reactions as well as other in process.


Research: Nuclear physics, Astrophysics, Instrumentation.
Ph. D. in Sciences at the “Université de París XI (Orsay).” France. 1988
Courses in physics and mathematics from High school to graduated school levels: Analytic geometry, Calculus, General Physics, Optics, Quantum Mechanics, Statistical Mechanics and Nuclear Physics.
Staff Researcher since 1983 to date.
Postdoctoral Lawrence Berkeley Laboratory, 88” Cyclotron. 1985-86
Visiting Scientist at Oak Ridge National Lab, 1990-92
Instituto Nacional de Investigaciones Nucleares, México, 2000.
Organizer of Scientific 20 scientific meetings:
Editor of the proceedings of 13 congress, symposia or Schools.
Over 80 Scientific Publications in Indexed Journals:

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Nov 18 2021


8:45 am - 9:45 am