Measuring the fusion cross-section of light nuclei with low-intensity beams

T. K. Steinbach; M. J. Rudolph; Z. Q. Gosser; K. Brown; B. Floyd; S. Hudan; R. T. Desouza; J. F. Liang; D. Shapira; M. Famiano

doi:10.1016/j.nima.2013.12.045

Measuring the fusion cross-section of light nuclei with low-intensity beams

T. K. Steinbach, M. J. Rudolph, Z. Q. Gosser, K. Brown, B. Floyd, S. Hudan, R. T. Desouza, J. F. Liang, D. Shapira, M. Famiano

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14 Scopus citations

Abstract

We demonstrate an approach to measure the total fusion cross-section for beams of low-intensity light nuclei. Fusion residues resulting from the fusion of ^20,16O+¹²C are directly measured and distinguished from unreacted beam particles on the basis of their energy and time-of-flight. The time-of-flight is measured between a microchannel plate (MCP) detector, which serves as a start, and a segmented silicon detector, which provides a stop. The two main difficulties associated with the initial implementation of this approach are charge trapping in the silicon detector and slit scattering in the MCP detector. Both these obstacles have been characterized and overcome. To reduce atomic slit scattering in the measurement we have eliminated wires from the beam path by developing a gridless MCP detector. The total fusion cross-section for ¹⁶O+¹²C in the energy range E _CM=8.0-12.0 MeV has been measured in agreement with established literature values (down to the 100 mb level).

Original language	English
Pages (from-to)	5-13
Number of pages	9
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	743
DOIs	https://doi.org/10.1016/j.nima.2013.12.045
State	Published - Apr 11 2014
Externally published	Yes

Funding

We wish to acknowledge Dr. A. Kayani for making the beam time at Western Michigan University available to us. This work was supported by the U.S. Department of Energy under Grant No. DEFG02-88ER-40404 (IU).

Keywords

Charge trapping
Detection of low energy heavy ions
Fusion excitation function
Measuring reactions with low intensity beams
Microchannel plate detector
Segmented silicon detectors

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10.1016/j.nima.2013.12.045

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Steinbach, T. K., Rudolph, M. J., Gosser, Z. Q., Brown, K., Floyd, B., Hudan, S., Desouza, R. T., Liang, J. F., Shapira, D., & Famiano, M. (2014). Measuring the fusion cross-section of light nuclei with low-intensity beams. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 743, 5-13. https://doi.org/10.1016/j.nima.2013.12.045

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title = "Measuring the fusion cross-section of light nuclei with low-intensity beams",

abstract = "We demonstrate an approach to measure the total fusion cross-section for beams of low-intensity light nuclei. Fusion residues resulting from the fusion of 20,16O+12C are directly measured and distinguished from unreacted beam particles on the basis of their energy and time-of-flight. The time-of-flight is measured between a microchannel plate (MCP) detector, which serves as a start, and a segmented silicon detector, which provides a stop. The two main difficulties associated with the initial implementation of this approach are charge trapping in the silicon detector and slit scattering in the MCP detector. Both these obstacles have been characterized and overcome. To reduce atomic slit scattering in the measurement we have eliminated wires from the beam path by developing a gridless MCP detector. The total fusion cross-section for 16O+12C in the energy range E CM=8.0-12.0 MeV has been measured in agreement with established literature values (down to the 100 mb level).",

keywords = "Charge trapping, Detection of low energy heavy ions, Fusion excitation function, Measuring reactions with low intensity beams, Microchannel plate detector, Segmented silicon detectors",

author = "Steinbach, \{T. K.\} and Rudolph, \{M. J.\} and Gosser, \{Z. Q.\} and K. Brown and B. Floyd and S. Hudan and Desouza, \{R. T.\} and Liang, \{J. F.\} and D. Shapira and M. Famiano",

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doi = "10.1016/j.nima.2013.12.045",

language = "English",

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Steinbach, TK, Rudolph, MJ, Gosser, ZQ, Brown, K, Floyd, B, Hudan, S, Desouza, RT, Liang, JF, Shapira, D & Famiano, M 2014, 'Measuring the fusion cross-section of light nuclei with low-intensity beams', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 743, pp. 5-13. https://doi.org/10.1016/j.nima.2013.12.045

TY - JOUR

T1 - Measuring the fusion cross-section of light nuclei with low-intensity beams

AU - Steinbach, T. K.

AU - Rudolph, M. J.

AU - Gosser, Z. Q.

AU - Brown, K.

AU - Floyd, B.

AU - Hudan, S.

AU - Desouza, R. T.

AU - Liang, J. F.

AU - Shapira, D.

AU - Famiano, M.

PY - 2014/4/11

Y1 - 2014/4/11

N2 - We demonstrate an approach to measure the total fusion cross-section for beams of low-intensity light nuclei. Fusion residues resulting from the fusion of 20,16O+12C are directly measured and distinguished from unreacted beam particles on the basis of their energy and time-of-flight. The time-of-flight is measured between a microchannel plate (MCP) detector, which serves as a start, and a segmented silicon detector, which provides a stop. The two main difficulties associated with the initial implementation of this approach are charge trapping in the silicon detector and slit scattering in the MCP detector. Both these obstacles have been characterized and overcome. To reduce atomic slit scattering in the measurement we have eliminated wires from the beam path by developing a gridless MCP detector. The total fusion cross-section for 16O+12C in the energy range E CM=8.0-12.0 MeV has been measured in agreement with established literature values (down to the 100 mb level).

AB - We demonstrate an approach to measure the total fusion cross-section for beams of low-intensity light nuclei. Fusion residues resulting from the fusion of 20,16O+12C are directly measured and distinguished from unreacted beam particles on the basis of their energy and time-of-flight. The time-of-flight is measured between a microchannel plate (MCP) detector, which serves as a start, and a segmented silicon detector, which provides a stop. The two main difficulties associated with the initial implementation of this approach are charge trapping in the silicon detector and slit scattering in the MCP detector. Both these obstacles have been characterized and overcome. To reduce atomic slit scattering in the measurement we have eliminated wires from the beam path by developing a gridless MCP detector. The total fusion cross-section for 16O+12C in the energy range E CM=8.0-12.0 MeV has been measured in agreement with established literature values (down to the 100 mb level).

KW - Charge trapping

KW - Detection of low energy heavy ions

KW - Fusion excitation function

KW - Measuring reactions with low intensity beams

KW - Microchannel plate detector

KW - Segmented silicon detectors

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U2 - 10.1016/j.nima.2013.12.045

DO - 10.1016/j.nima.2013.12.045

M3 - Article

AN - SCOPUS:84893180306

SN - 0168-9002

VL - 743

SP - 5

EP - 13

JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

ER -

Measuring the fusion cross-section of light nuclei with low-intensity beams

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Keywords

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