Observation of the 'head-tail' effect in nuclear recoils of low-energy neutrons

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dc.creatorDujmic, D.
dc.creatorTomita, H.
dc.creatorLewandowska, M.
dc.creatorAhlen, S.
dc.creatorFisher, P.
dc.creatorHenderson, S.
dc.creatorKaboth, A.
dc.creatorKohse, G.
dc.creatorLanza, R.
dc.creatorMonroe, J.
dc.creatorRoccaro, A.
dc.creatorSciolla, G.
dc.creatorSkvorodnev, N.
dc.creatorVanderspek, R.
dc.creatorWellenstein, H.
dc.creatorYamamoto, R.
dc.date2007-08-17
dc.date2007-10-09
dc.date.accessioned2026-07-07T11:52:57Z
dc.date.available2026-07-07T11:52:57Z
dc.descriptionDirectional detection of dark matter can provide unambiguous observation of dark matter interactions even in the presence of background. This article presents an experimental method to measure the direction tag ("head-tail") of the dark matter wind by detecting the scintillation light created by the elastic nuclear recoils in the scattering of dark matter particles with the detector material. The technique is demonstrated by tagging the direction of the nuclear recoils created in the scattering of low-energy neutrons with CF4 in a low-pressure time-projection chamber that is developed by the DMTPC collaboration. The measurement of the decreasing ionization rate along the recoil trajectory provides the direction tag of the incoming neutrons, and proves that the "head-tail" effect can be observed.
dc.description14 pages, 8 figures, submitted to Nucl.Instr.Meth
dc.identifierhttps://arxiv.org/abs/0708.2370
dc.identifierhttp://arxiv.org/abs/0708.2370
dc.identifierNucl.Instrum.Meth.A584:327-333,2008; Erratum-ibid.A592:123,2008
dc.identifierdoi:10.1016/j.nima.2007.10.037 10.1016/j.nima.2008.04.001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/204366
dc.subjectInstrumentation and Detectors
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Experiment
dc.titleObservation of the 'head-tail' effect in nuclear recoils of low-energy neutrons
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