AMS cross-section measurement for the $$^{28}$$Si(d,$$\alpha $$)$$^{26}$$Al reaction near the Coulomb barrier

Reza, G.; Zunun-Torres, A.B.; Padilla, S.; Ruíz, J.; Marín-Lámbarri, D. J.; Acosta, L.; Amador-Valenzuela, P.; Andrade, E.; Belmont, D.; Charón, Luis E.; Huerta, A.; Godos-Valencia, David; Martínez, Josselin N.; Méndez, C Germán; Moreno, E.; Murillo, G.; Policroniades, R.; Rodríguez-Ceja, María; Sandoval-Hipólito, S.; Sharma, Vijay R.; Solı́s, C.; Varela, A.; Villaseñor, P.; Chávez, E.

doi:10.1140/epjp/s13360-020-00906-7

Cited by 6 publications

(3 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the nuclear physics beam line, experiments are conducted to measure nuclear reaction cross sections at low energy of relevance for stelar nucleosynthesis and astrophysics. Two of the most important publications in this field are the AMS cross-section measurement for 28 Si(d,α) 26 Al and 9 Be(n,γ) 10 Be nuclear reactions at low energies (Marín-Lámbarri et al 2020;Reza et al 2020).…”

Section: Applicationsmentioning

confidence: 99%

Radiocarbon in Mexico: From Proportional Counters to Ams

et al. 2021

View full text Add to dashboard Cite

Augusto Moreno is credited with establishing the first radiocarbon (14C) laboratory in Mexico in the 1950s, however, 14C measurement with the accelerator mass spectrometry (AMS) technique was not achieved in our country until 2003. Douglas Donahue from the University of Arizona, a pioneer in using AMS for 14C dating, participated in that experiment; then, the idea of establishing a 14C AMS laboratory evolved into a feasible project. This was finally reached in 2013, thanks to the technological developments in AMS and sample preparation with automated equipment, and the backing and support of the National Autonomous University of Mexico and the National Council for Science and Technology. The Mexican AMS Laboratory, LEMA, with a compact 1 MV system from High Voltage Engineering Europa, and its sample preparation laboratories with IonPlus automated graphitization equipment, is now a reality.

show abstract

Section: Applicationsmentioning

confidence: 99%

Radiocarbon in Mexico: From Proportional Counters to Ams

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Thousands of samples have been analyzed, some of the more relevant results in applied and interdisciplinary research produced in this facility can be found in [6,7,8,9,10,11,12]. This facility has also been useful for fundamental nuclear physics research [13,14,15,16,17].…”

Section: Introductionmentioning

confidence: 99%

Monoisotopic targets production from atomic and molecular positive ion implantation in a tandem accelerator at low energies

Mas-Ruiz,

Marín-Lámbarri,

Sandoval-Hipólito

et al. 2023

J. Phys.: Conf. Ser.

Self Cite

View full text Add to dashboard Cite

We produced monoisotopic targets of 13C and 28,29Si with 1015−16 atoms/cm2 areal density by ion implantation in different matrices at the Accelerator Mass Spectrometry (AMS) facility in Mexico. The tandem accelerator terminal voltage was set at the lowest achievable value (200 kV) that yield beams with energy of 435 keV. It is possible to do ion implantation at lower energies in our facility through the use of molecular beams, so in this work we looked for, and successfully found, bound positively charged molecular beams, although with very low intensity. We inject 235 keV C 6 − molecules into the charge of exchange canal (argon) of our tandem accelerator and detected the survival fraction of C2,3,4 molecules in 1+ and 2+ charge states or above. Our results showed that some molecules remain bound, with one or more electrons missing, after being forced through a low density gas stripper at relatively high energy. In the production process of negative molecular fluxes in the Source of Negative Ions by Cesium Sputtering (SNICS) we found an odd-even effect in their intensity that we understand as the coupling between the fragment size distribution of a dynamic fragmentation of graphite by cesium impact and the electron affinity of the molecules with n-carbon atoms. The availability of these kind of high energy molecular beams opens the door for discovery both in the study of the physics of negative and positive molecular ions.

show abstract

“…Besides the research programs associated with Material Sciences that take advantage of the availability of IBA techniques, other fields in scientific research are being pushed recently. In particular nuclear physics [7][8][9] and nuclear astrophysics [10][11][12][13][14][15][16], with the joint effort of several Mexican facilities.…”

Section: Introductionmentioning

confidence: 99%

Restoration of the radio frequency ion source of the 5.5 MV CN-Van de Graaff accelerator at IFUNAM

et al. 2021

View full text Add to dashboard Cite

in 1984 and started a new life in 1988. At the end of 2017, the ion source was severely damaged. Several power supplies were destroyed. In this article we describe the process of restoring the VDG terminal. A number of power supplies were redesigned, built, tested and mounted in the Terminal. As a result of the work carried out during most of 2019, the VDG accelerator is now operational and we show data from the Rutherford Backscattering (RBS) analysis of a platinum coated silicon slab using the first proton and 𝛼 beams. Electronic diagrams of all supplies in their new configuration are provided for the benefit of this kind of RF-Ion sources users still numerous. K: Accelerator Subsystems and Technologies; Ion sources (positive ions, negative ions, electron cyclotron resonance (ECR), electron beam (EBIS)); Instrumentation for particle accelerators and storage rings -low energy (linear accelerators, cyclotrons, electrostatic accelerators)

show abstract

AMS cross-section measurement for the $$^{28}$$Si(d,$$\alpha $$)$$^{26}$$Al reaction near the Coulomb barrier

Cited by 6 publications

References 21 publications

Radiocarbon in Mexico: From Proportional Counters to Ams

Radiocarbon in Mexico: From Proportional Counters to Ams

Monoisotopic targets production from atomic and molecular positive ion implantation in a tandem accelerator at low energies

Restoration of the radio frequency ion source of the 5.5 MV CN-Van de Graaff accelerator at IFUNAM

Contact Info

Product

Resources

About