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Corrosion Test Procedure for the Selection of Crystal Bar Zirconium for Use in Naval Reactor Fuel Elements. (Includes Addendum)
None
Date:
May 10, 1950
Creator:
Saitta, V. F.
System:
The UNT Digital Library
High Efficiency Collection of Radioactive Dust
None
Date:
April 10, 1950
Creator:
Caplan, K. J.
System:
The UNT Digital Library
A Measurement of the Positive π-μ Decay Lifetime
None
Date:
May 10, 1950
Creator:
Chamberlain, O.; Mozley, R. F.; Steinberger, J. & Wiegand, C.
System:
The UNT Digital Library
A MEASUREMENT OF THE POSITIVE pi- Mu DECAY LIFETIME
The lifetime for the decay of a {pi} meson into {mu} meson and neutral particle was first measured by Richardson and later by Martinelli and Panofsky. The method was the same in both cases: The fraction of {pi} mesons surviving various times of flight is measured by placing photographic detectors at various path lengths from the target. In the experiment reported here we observe the time lag between the two bursts of fluorescence due to mesons decaying in a scintillation crystal. The first burst is due to the stopping of the entering {pi} meson, the second to the {mu}-meson. As is shown in Fig. 1, a particle penetrating the first and into the second crystal starts the sweep (10{sup -8} sec/mm) of an oscilloscope. The pulses in the second crystal are delayed 0.5 x 10{sup -6} sec to allow the sweep to start and brighten and are then photographed. If the responsible particle is a {pi}{sup +} meson which stops in the crystal, it undergoes {pi}-{mu} decay and two pulses appear on the trace. The {mu}{sup +} meson has a range of only 2 mm in the crystal. If its decay electron is detected some time (.5-2.5 x 10{sup -6} …
Date:
May 10, 1950
Creator:
Chamberlain, O.; Mozely, R.F.; Steinberger, J. & Wiegand, C.
System:
The UNT Digital Library
The r-Unit at 320 and 160 MEV
None
Date:
November 10, 1950
Creator:
McMillan, E. M.; Blocker, W. & Kenney, R. W.
System:
The UNT Digital Library
URANIUM HYDRIDE: A SURVEY
None
Date:
April 10, 1950
Creator:
Kitzes, A.S.
System:
The UNT Digital Library