Scattering of electrons in beta-spectroscopy sources

A. Špalek; O. Dragoun; M. Ryšavý; V. Brabec; A. Kovalík; A. F. Novgorodov

doi:10.1007/bf02504440

Scattering of electrons in beta-spectroscopy sources

Measurement Techniques ◽

10.1007/bf02504440 ◽

1997 ◽

Vol 40 (8) ◽

pp. 803-806

Author(s):

A. Špalek ◽

O. Dragoun ◽

M. Ryšavý ◽

V. Brabec ◽

A. Kovalík ◽

...

Keyword(s):

Beta Spectroscopy

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On the possibility of applying trochoidal orbits in beta-spectroscopy

Nuclear Instruments ◽

10.1016/0369-643x(57)90066-x ◽

1957 ◽

Vol 1 (5) ◽

pp. 251-252 ◽

Cited By ~ 5

Author(s):

K.G. Malmfors

Keyword(s):

Beta Spectroscopy

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PROMPT BETA SPECTROSCOPY AS A DIAGNOSTIC FOR MIX IN IGNITED NIF CAPSULES

Modern Physics Letters A ◽

10.1142/s0217732306020317 ◽

2006 ◽

Vol 21 (13) ◽

pp. 1029-1040 ◽

Cited By ~ 8

Author(s):

A. C. HAYES ◽

GERARD JUNGMAN ◽

J. C. SOLEM ◽

P. A. BRADLEY ◽

R. S. RUNDBERG

Keyword(s):

Laser Beam ◽

Beam Energy ◽

High Energy ◽

Shell Material ◽

National Ignition Facility ◽

Confinement Fusion ◽

Order Of Magnitude ◽

Beta Spectroscopy ◽

Fundamental Physical ◽

Beta Emission

The National Ignition Facility (NIF) technology is designed to drive deuterium–tritium (DT) internal confinement fusion (ICF) targets to ignition using indirect radiation from laser beam energy captured in a hohlraum. Hydrodynamical instabilities at interfaces in the ICF capsule leading to mix between the DT fuel and the ablator shell material are of fundamental physical interest and can affect the performance characteristics of the capsule. Here we describe new radiochemical diagnostics for mix processes in ICF capsules with plastic or Be (0.9% Cu ) ablator shells. Reactions of high-energy tritons with shell material produce high-energy β-emitters. We show that mix between the DT fuel and the shell material enhances high-energy prompt beta emission from these reactions by more than an order of magnitude over that expected in the absence of mix. We further show how a mix signal could be detectable in an ignition failure regime corresponding to yields greater than about 2 kJ.

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