Table I contains an error in the anode mass flow rate and base pressure for the xenon 600 V, 15 A condition.1 The anode mass flow rate should be 181 SCCM or 16.3 mg/s instead of 171 SCCM or 15.4 mg/s, and the pressure should be 6.2  μTorr instead of 5.4  μTorr. This error propagates to the specific impulse [Fig. 7(b) and Table III], anode efficiency [Fig. 7(c) and Table III], total efficiency (Table III), anode efficiency difference [Fig. 7(d)], ratio of measured to theoretical limit of specific impulse [Fig. 8], and experimental ratio of xenon to krypton anode efficiency (Fig. 13) for this condition. While these changes affect the specific results, they do not change the conclusions of our previous work. We apologize for the inconvenience these changes may have caused.

TABLE I.

Xenon performance measurements.

ConditionThrust (mN)Isp (s)ηa (%)ηtot (%)
300 V, 15 A 292.9 ± 3.5 1881 ± 35 64.2 ± 1.6 58.6 ± 1.8 
300 V, 20 A 377.6 ± 3.8 1944 ± 29 64.2 ± 1.3 58.9 ± 1.5 
400 V, 15 A 350.8 ± 3.4 2168 ± 36 66.5 ± 1.5 61.0 ± 1.8 
500 V, 15 A 405.1 ± 3.4 2395 ± 37 67.9 ± 1.4 62.5 ± 1.7 
600 V, 15 A 447.2 ± 3.0 2620 ± 38 68.3 ± 1.3 63.1 ± 1.6 
ConditionThrust (mN)Isp (s)ηa (%)ηtot (%)
300 V, 15 A 292.9 ± 3.5 1881 ± 35 64.2 ± 1.6 58.6 ± 1.8 
300 V, 20 A 377.6 ± 3.8 1944 ± 29 64.2 ± 1.3 58.9 ± 1.5 
400 V, 15 A 350.8 ± 3.4 2168 ± 36 66.5 ± 1.5 61.0 ± 1.8 
500 V, 15 A 405.1 ± 3.4 2395 ± 37 67.9 ± 1.4 62.5 ± 1.7 
600 V, 15 A 447.2 ± 3.0 2620 ± 38 68.3 ± 1.3 63.1 ± 1.6 

We replot the specific impulse, anode efficiency, ratio of specific impulse, and difference in anode efficiency in Fig. 1. We retabulate the performance metrics in Table I.

FIG. 1.

(a) Specific impulse, (b) anode efficiency, (c) ratio of measured to theoretical limit of specific impulse, and (d) difference in anode efficiency for xenon and krypton as a function of operating condition.

FIG. 1.

(a) Specific impulse, (b) anode efficiency, (c) ratio of measured to theoretical limit of specific impulse, and (d) difference in anode efficiency for xenon and krypton as a function of operating condition.

Close modal
1.
L. L.
Su
and
B. A.
Jorns
, “
Performance comparison of a 9-kW magnetically shielded Hall thruster operating on xenon and krypton
,”
J. Appl. Phys.
130
,
163306
(
2021
).