Measurement of the response of heat-and-ionization germanium detectors to nuclear recoils

Details Measurement of the response of heat-and-ionization germanium detectors to nuclear recoils Measurement of the response of heat-and-ionization germanium detectors to nuclear recoils

2006-07-21

arxiv.org/abs/astro-ph/0607502v1

Nucl.Instrum.Meth.A577:558-568,2007

Astronomy and Astrophysics

Astrophysics

28 pages, 7 figures. Submitted to Phys. Rev. D

Scientific paper

10.1016/j.nima.2007.04.118

The heat quenching factor Q' (the ratio of the heat signals produced by nuclear and electron recoils of equal energy) of the heat-and-ionization germanium bolometers used by the EDELWEISS collaboration has been measured. It is explained how this factor affects the energy scale and the effective quenching factor observed in calibrations with neutron sources. This effective quenching effect is found to be equal to Q/Q', where Q is the quenching factor of the ionization yield. To measure Q', a precise EDELWEISS measurement of Q/Q' is combined with values of Q obtained from a review of all available measurements of this quantity in tagged neutron beam experiments. The systematic uncertainties associated with this method to evaluate Q' are discussed in detail. For recoil energies between 20 and 100 keV, the resulting heat quenching factor is Q' = 0.91+-0.03+-0.04, where the two errors are the contributions from the Q and Q/Q' measurements, respectively. The present compilation of Q values and evaluation of Q' represent one of the most precise determinations of the absolute energy scale for any detector used in direct searches for dark matter.

Affiliated with

Also associated with

No associations

Rating

Measurement of the response of heat-and-ionization germanium detectors to nuclear recoils does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Measurement of the response of heat-and-ionization germanium detectors to nuclear recoils, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measurement of the response of heat-and-ionization germanium detectors to nuclear recoils will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-170150