Erratum: Excitation of Chirping Whistler Waves in a Laboratory Plasma [Phys. Rev. Lett. 114, 245002 (2015)]

Figure 1

Spectrograms of types of beam generated wave emissions, ranging from falling tones, hooks, and simultaneous rising and falling tones to crossing falling and rising tones. The fast electron energy is 3 keV for all cases, and ${\omega }_{pe}/{\mathrm{\Omega }}_e=2.6$, 2.6, 2.9, 2.6, 2.9, 2.9 and $n_b/n_0(\%)=1.8$, 1.8, 1.5, 1.8, 1.5, 1.5 for panels (a)–(f), respectively.