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1 - Nuclear Sciences and Applications - IAEA

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<strong>IAEA</strong>-CN-50/A-n-S-l 133<br />

(b) Hard X-rays only appeared in the initial <strong>and</strong> the disruption phases (after<br />

35 ms) [2].<br />

(c) On the plateau, a Maxwellian distribution spectrum of Te =<br />

600-1000 eV appeared from the signal of the soft X-ray pulse height<br />

analyser (PHA) (Fig. 2).<br />

(d) Zeff as computed from Te(r) (measured by PHA <strong>and</strong> Langmuir probes),<br />

Vf <strong>and</strong> Ip, by using Spitzer resistivity, was 3.3, in agreement with the<br />

directly measured value (from impurity spectrum <strong>and</strong> line radiation measured<br />

by PHA).<br />

(2) In SLD, Ne was determined from the outgassing rate. It was more difficult to<br />

control the wall surface conditions than gas puffing. So, the parameters were<br />

dispersive. We chose about 300 similar shots from the data of more than<br />

1000 discharges:<br />

Ne = (0.2-0.4) x 10 13 cm<br />

Ip = 65 kA<br />

Vf = 0.7-1.4 V<br />

Bt = 9.4 kG<br />

In addition, we assumed:<br />

Ne(r) = Ne [1 - (r/a) 2 ]

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