At Last! A High-Powered Magnetometer Solution for The
Most Challenging Applications

The optically pumped Potassium magnetometer / gradiometer / sensor is a technology that is uniquely available to GEM customers – the result of more than a decade of research and development, and testing. Unlike yesterday’s generation of optically pumped Caesium magnetometers which represent 20 year old technology, the new Potassium system delivers the latest technologies in a choice of two configurations.

To help you navigate the various options available, we have provided a three-step process you can use to make an informed decision. Simply follow the steps below:

Step 1: Select by Application

The first step to purchasing a Potassium magnetometer / gradiometer / sensor(s) is to be certain that the unit you choose will be best suited to your particular needs.

a) I’m primarily interested in very high sensitivity surveys for Near Surface work (engineering & environmental; archaeology; UXO; and academic research / teaching).

GSMP-40 Potassium magnetometer / gradiometer is your most logical choice.

b) I’m primarily interested in very high sensitivity surveys for Resource Exploration and academic research / teaching.

GSMP-35 Potassium magnetometer / gradiometer is your most logical choice.

c) I’m primarily interested in configuring single or multiple Potassium sensors for use on a towed vehicle, such as an all terrain vehicle (ATV), etc.

If your interest is c), the GSMP-40 or GSMP-35 sensor is your most logical choice.

Step 2: Discover More About Your Choice

The second step to making a wise decision is to get some background information that summarizes the key points that you need to know about your choice of magnetometer, gradiometer or sensor.

While you’re here you can also download product and technical information. If you have any questions, please call us at 1-905-764-8008 or email us at info@gemsys.ca

a) Potassium Near Surface Mag – GSMP-40 System                          TOP

For the earth science professional working with near surface results (environmental and engineering, UXO, archaeology, etc.), the optimal system is the GSMP-40 optically pumped Potassium magnetometer / gradiometer.

This system offers many advantages, ranging from fine detailing of magnetic anomalies from near surface sources, ability to survey near cultural areas which are normally significant sources of geophysical “noise”, high sampling for automated surveys (i.e. using ATV, snow mobile, Zodiac, etc.).

The GSMP-40 comes equipped with sensor poles for mounting and transporting sensors during the survey. In gradiometer mode, the sensors are mounted on a pivoting staff assembly that enables either vertical gradient or horizontal gradient measurements depending on how you set up the system. The horizontal configuration enables you to acquire data over multiple closely spaced lines at one time (i.e. 1m separation between sensors).

For more information, please refer to the following resources:

• GSMP-40 Technical Presentation
• GSMP-40 Technical Specifications
• Brief Review of Quantum Magnetometers
• Short Description of Optically Pumped Potassium Physics

b) Potassium Resource Mag – GSMP-35 System                                TOP

Earth science professionals working on resource exploration projects can also take advantage of GEM's very high sensitivity, high gradient tolerance Potassium option. For example, this system is ideal for sensitive prospecting around suspected kimberlite deposits. It also has applicability for prospecting for iron deposits where high gradients often render magnetic readings difficult to acquire. Other deposit types can also benefit from the new system.

The Potassium Resource system has been designed with hands-free, backpack-mounted operation in mind for ease-of-use in the bush and difficult terrain. Another feature is in data acquisition, with real time graph, and most uniquely navigation, using our famous Console used in our GSM-19W Overhauser.

Some of the key benefits to using the system include:

• Ability to resolve very subtle targets; highest sensitivity available in a total field magnetometer / gradiometer at 4.7 pT / root Hz at 20 samples per second
   
• Ability to resolve targets with high gradients in highly magnetic environments; very high gradient tolerance at 30,000 nT / m.
   
• High quality data; minimal heading error of + / - 0.0025 nT. Heading errors occur due to changes in direction and related magnetic field to sensor coupling.
   
• Ability to acquire very high resolution data; sampling speed of 20 samples per second is highest in industry.

For more information, please refer to the following resources:

• GSMP-35 Technical Specifications
• Brief Review of Quantum Magnetometers
• Short Description of Optically Pumped Potassium Physics

c) Potassium – GSMP-40 or GSMP-35 Sensor                                   TOP

Some organizations are looking increasingly at implementing arrays or configurations composed of one or more sensors mounted on different platforms, such as towed cart, all terrain vehicle (ATV), snowmobile, Zodiac or others.

GEM makes finding a solution easy through its GSMP-40 and GSMP-35 sensors. The choice of sensor is determined by sensitivity and gradient tolerance requirements.

For example, the GSMP-40 has a higher sensitivity but lower gradient tolerance than the GSMP-35. This makes the GSMP-40 a better choice for doing very detailed work but there may be some noise due to nearby cultural installations. The GSMP-35 is ideal for slightly less sensitive surveys where higher gradient tolerance is required.

For more information, please refer to the following resources:

• GSMP-40 Technical Specifications
• GSMP-35 Technical Specifications
• Brief Review of Quantum Magnetometers
• Short Description of Optically Pumped Potassium Physics

Step 3: Get a Quick Quotation

The final step to implementing your solution is to contact GEM for a quick and easy quotation.

We’ll spend some time discussing your particular application and recommend the solution that optimizes your survey requirements (sensitivity, gradient tolerance, configuration, single or multiple sensors, etc.).

You can relax knowing all GEM Advanced Magnetometer solutions are backed by the strongest warranty in the business (2 years).

For the fastest service, please call one of our sales representatives at +1-905-752-2202 or click here to fill in a short quotation form and we’ll contact you to discuss your situation.

Technical Papers

• Brief Review of Quantum Magnetometers
• Short Description of Optically Pumped Potassium Physics