Instrumentación

 

Simultaneous measurement of the (d,d) and (d,p) resonant reactions using thick deuterated polyethylene targets

 

E. Chávez^a, A. Huerta^a, M.E. Ortiz^a, G. Murillo^b, R. Policroniades^b , A. Varela^b, E. Moreno^b, A. Galindo-Uribarri^c, J. Gómez-del-Campo^c, F. Liang^c and D. Shapira^c

 

^a IFUNAM, Apartado Postal 20-364, México D.F., México.

^b Departamento del Acelerador, ININ, Salazar, Edo. Méx., 52045, México.

^c Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831.

 

Recibido el 14 de mayo de 2004.
Aceptado el 11 de agosto de 2004.

 

Abstract

The thick target technique is extended here to study reactions induced by deuterons. Deuterated target production and characterization is reviewed in detail. The experimental setup used in a previous work, to study proton induced resonances, is complemented here with an additional thin transmission detector for standard particle identification with the E-ΔE technique. Through the measurement of the excitation functions of the ²H(¹²C,d) and ²H(¹²C,p) reactions, resonant states in ¹⁴N are studied. Using known energies and widths for resonances in the relevant energy range, good fits were obtained with R-matrix calculations.

Keywords: (deuterated) target preparation; elastic recoil analysis; resonant reactions.

 

Resumen

El uso de la técnica del blanco grueso en cinemática inversa desarrollado por nuestro grupo es extendido en este trabajo para estudiar reacciones resonantes inducidas por deuterones. Se detalla la preparación de los blancos deuterados. El arreglo experimental ha sido también mejorado sustituyendo el detector de partículas cargadas por un telescopio E-ΔE que permite identificación de partículas. Un conjunto de estados resonantes en ¹⁴N son resueltos e identificados mediante las reacciones elástica, ²H(¹²C,d) y de transferencia de un neutrón,²H(¹²C,p). La comparación de nuestros datos con cálculos de matriz R usando valores conocidos de las energías y anchuras de las resonancias es excelente.

Descriptores: Preparación de blancos (deuterados); análisis de retroceso elástico; reacciones resonantes.

 

PACS: 24.30 Gd, 25.45.De, 25.45.Hi

 

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Acknowledgements

Research at the Oak Ridge National Laboratory was supported by the U.S. Department of Energy under Contract No. DE-AC05-00OR22725 with UT-Battelle, LLC and under Contract No. DE-AC05-76OR000333 between the U.S. Department of Energy and Oak Ridge Associated Universities. This work was also supported in part by CONACYT (Mexico) through contracts: 1103-E9102, F036-E9109, G0010-E and DGAPAUNAM: IN114896. We like to thank P. Villaseñor, and D. G. Linarte B. operators of the tandem at ININ, K. López, and F. Jaimes, operators of the Pelletron at IFUNAM, and the operator's crew at HRIBF at ORNL, for their assistance and delivery of all the different beams needed for this work.

 

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