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Experimental data are presented which show that increased bandwidth of an electromagnetic driver can reduce the hot-electron temperature due to resonant absorption. This work, done at microwave frequencies, shows that TH∝(Δωω)^-0.25. We also observe that the hot-electron density increases with increasing bandwidth such that the heat flux (QH∝nHTH3/2) is nearly constant as a function of bandwidth.
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Spielman et al. (1981) studied this question.
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