12. In the limiting case of low-energy scattering, ka <1, of quantum hard-sphere scattering the scattering cross-section is ... ... .... where a is the size of the target and r is the distance between the target and the detector]- O o = 0
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![12. In the limiting case of low-energy scattering, ka «1, of quantum
hard-sphere scattering the scattering cross-section is ... ... .... -[
where a is the size of the target and r is the distance between the
target and the detector]-
a = ra?
O a =0
Οσ-](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8e0a67cf-6bc1-4a40-8bf9-738fc9fe1f54%2F0c527fa1-c59f-4948-a6d3-b67ddfa7a2b8%2Fk71s1sl_processed.jpeg&w=3840&q=75)
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