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Using Synchrotron Radiation Microtomography to Investigate Multi-scale Three-dimensional Microelectronic Packages

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Testing the stand-alone microbeam at Columbia University.

G Garty¹, G J Ross, A W Bigelow

¹Columbia University, Radiological Research Accelerator Facility, 136 S. Broadway, Irvington, NY 10533, USA. gyg2101@columbia.edu

Radiation Protection Dosimetry

|December 26, 2006

Summary

A new microbeam irradiation system uses a polonium alpha emitter and magnetic lenses for biological studies. This novel, cost-effective design simplifies operation and reduces equipment needs for advanced research.

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Area of Science:

Physics
Biology
Materials Science

Background:

Conventional accelerators for ion beam studies are complex and expensive.
Biological microbeam irradiation requires precise control over particle delivery.
Existing microbeam technologies often involve significant infrastructure and operational costs.

Purpose of the Study:

To present a novel, stand-alone microbeam system for biological irradiation studies.
To demonstrate a cost-effective and simplified alternative to accelerator-based microbeams.
To detail the design and initial performance testing of a magnetic lens-focused alpha particle microbeam.

Main Methods:

Utilizing a high-specific-activity alpha emitter (polonium-210) as the ion source.
Employing a compound magnetic lens composed of 24 permanent magnets in a quadrupole triplet configuration for focusing.

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Testing the microbeam's performance characteristics, including beam diameter and particle flux.

Main Results:

A microbeam with a 10 micrometer diameter and a flux of 1 alpha particle/s is theoretically achievable.
The system uses permanent magnets, eliminating the need for power supplies and cooling systems.
The design is simple, cheap, and suitable for implementation in standard laboratories.

Conclusions:

The novel microbeam system offers a practical and economical solution for biological irradiation research.
The use of permanent magnets significantly simplifies the operation and reduces the cost of microbeam technology.
This approach provides a viable alternative for labs seeking advanced microbeam capabilities without large-scale infrastructure.