The $^{12}$C(n, 2n)$^{11}$C cross section from threshold to 26.5 MeV

(2) State University of New York; (3) Ohio University; (4) National Institute of Standards; (5) Laboratory for Laser Energetics; A. T. Simone (2); C. E. Parker (3); C. R. Brune (3); D. N. Polsin (2); Geneseo; G. Hartshaw (1)

arxiv: 1707.09375 · v2 · pith:FYRBQT7Inew · submitted 2017-07-28 · ⚛️ nucl-ex

The ¹²C(n, 2n)¹¹C cross section from threshold to 26.5 MeV

M. Yuly (1) , T. Eckert (1) , G. Hartshaw (1) , S. J. Padalino (2) , D. N. Polsin (2) , M. Russ (2) , A. T. Simone (2) , C. R. Brune (3)

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T. N. Massey (3) C. E. Parker (3) R. Fitzgerald (4) T. C. Sangster (5) S. P. Regan (5) ((1) Houghton College (2) State University of New York Geneseo (3) Ohio University (4) National Institute of Standards Technology Gaithersburg (5) Laboratory for Laser Energetics University of Rochester)

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keywords crossmeasuredpolyethylenesectiontargetsthresholdupperwere

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The $^{12}$C(n, 2n)$^{11}$C cross section was measured from just below threshold to 26.5 MeV using the Pelletron accelerator at Ohio University. Monoenergetic neutrons, produced via the $^3$H(d,n)$^4$He reaction, were allowed to strike targets of polyethylene and graphite. Activation of both targets was measured by counting positron annihilations resulting from the $\beta^+$ decay of $^{11}$C. Annihilation gamma rays were detected, both in coincidence and singly, using back-to-back NaI detectors. The incident neutron flux was determined indirectly via $^{1}$H(n,p) protons elastically scattered from the polyethylene target. Previous measurements fall into upper and lower bands, the results of the present measurement are consistent with the upper band.

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The ¹²C(n, 2n)¹¹C cross section from threshold to 26.5 MeV

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