Study of the12C excited states above the Hoyle State.

40th Symposium on Nuclear Physics 2017

López-Saavedra, E.^1 ; Acosta, L.^1 ; Araujo, V.^1 ; Favela, F.^1 ; Huerta, A.^1 ; Aspiazu, J.^2 ; Murillo, G.^2 ; Policroniades, R.^2 ; Santa Rita, P.^1 ; Varela, A.^2 ; Chávez, E.^1

Instituto de Física, Universidad Nacional Autónoma de México, Ciudad de México

04510, Mexico^1

Departamento de Aceleradores, Instituto Nacional de Investigaciones Nucleares, Carretera México-Toluca S/N, La Marquesa Ocoyoacac, Estado de México

52750, Mexico^2

关键词: Beam intensity;    Deuteron beams;    Low-lying excited state;    Quantum numbers;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/876/1/012015/pdf
DOI  :  10.1088/1742-6596/876/1/012015

来源: IOP

【 摘 要 】

In this work we study the low-lying excited states of12C, especially above the Hoyle state (0+, 7,654 MeV) through the use of the14N(d,α)12C reaction. The EN-Tandem at ININ delivered deuteron beams between 2.5 and 7.5 MeV. Typical beam intensities were 20-50 nA. Two different compounds were used to produce thin films: Si3N4(150 nm) and of C5H5N5(10 μm). Angular distributions of emitted α-particles were measured at each energy. The first results of the analysis are presented including quantum number assignments (energy, spin and parity) of the excited states populated.