155 research outputs found
Probing of Pockets Related to the Attachment Level
Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/141939/1/jper0281.pd
Measuring device Patent
Expulsion and measuring device for determining quantity of liquid in tank under conditions of weightlessnes
Comparative Study of the Pressure of Brushing with Three Types of Toothbrushes
Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/141529/1/jper0410.pd
Short Term Results of Three Modalities of Periodontal Treatment
Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/141914/1/jper0131.pd
Results of Periodontal Therapy Related to Tooth Type
Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/142120/1/jper0270.pd
Oral Hygiene and Maintenance of Periodontal Support
Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/142220/1/jper0026.pd
Results of Periodontal Treatment Related to Pocket Depth and Attachment Level. Eight Years
Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/141007/1/jper0225.pd
Ultra-High Energy Cosmic Ray Nuclei from Individual Magnetized Sources
We investigate the dependence of composition, spectrum and angular
distributions of ultra-high energy cosmic rays above 10^19 eV from individual
sources on their magnetization. We find that, especially for sources within a
few megaparsecs from the observer, observable spectra and composition are
severely modified if the source is surrounded by fields of ~ 10^-7 Gauss on
scales of a few megaparsecs. Low energy particles diffuse over larger distances
during their energy loss time. This leads to considerable hardening of the
spectrum up to the energy where the loss distance becomes comparable to the
source distance. Magnetized sources thus have very important consequences for
observations, even if cosmic rays arrive within a few degrees from the source
direction. At the same time, details in spectra and chemical composition may be
intrinsically unpredictable because they depend on the unknown magnetic field
structure. If primaries are predominantly nuclei of atomic mass A accelerated
up to a maximum energy E_max with spectra not much softer than E^-2, secondary
protons from photo-disintegration can produce a conspicuous peak in the
spectrum at energy ~ E_max/A. A related feature appears in the average mass
dependence on energy.Comment: 15 pages, 16 ps figures, published version with minor changes, see
http://stacks.iop.org/1475-7516/2004/i=08/a=01
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