Ulrich Bonse became a prominent figure in the world of x-ray characterization in the 1960s and continued to be active into the 2000s. Other papers in the volume will cover Bonse’s work in interferometry and in phase contrast tomography, and this account will be limited to x-ray tomography with absorption contrast. The author first encountered Bonse at a NATO Advanced Study Institute where Bonse lectured on x-ray sources and where the author was a beginning PhD student. In 1979, synchrotron x-radiation was quite novel for materials and other applications, so Bonse’s lecture was very important in setting the stage for future developments. Now, the author routinely has beamtime a dozen or more times a year, something which he could not have imaged in 1979. Throughout his career, Bonse was a strong advocate for the storage ring community, and the second section of this account discusses the timeline of storage rings becoming available for experimenters. The third section of this paper describes the early development of microComputed Tomography (microCT), a field where Bonse made important contributions. The fourth section summarizes “Developments in X-ray Tomography I-V of SPIE, the conference that Bonse founded.
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