¹⁸⁸W/¹⁸⁸Re Generator System and Its Therapeutic Applications

Table 1

Examples of nuclear constants for nuclides in the ¹⁸⁸W production chain.

Nuclide	Decay constant, 𝜆 (s^−1)	Cross-section, 𝜎 (b)	Values for resonance integral, 𝐼 (b)
^186W	—	37.9	485
^187W	8.09×10^−6	64.0	2760; 10
^188W	1.16×10^−7	12	0; 50 000; 1.4
187Re	—	76.4	300
188Re	1.13×10^−5	<2	—