核磁共振（NMR）梯度场线圈系统
梯度线圈：
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均质本地地球磁场
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允许测量自旋-自旋弛豫（T 2）
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演示一维核磁共振成像（MRI）
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生成观察到（和声音）自旋回波
亥姆霍兹线圈：
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允许绝对测量原子核磁矩
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31 P和2小时核实验提供字段
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定量显示，磁场作为载体
地球的场梯度/场线圈系统（EFGFC1Å）是一个有价值的除了 地球的现场核磁力共振（EFNMR1）设备。虽然在EFNMR1à提供一个长列表的实验，也可以进行液体包含无论是氢或氟，这些梯度/场线圈，用自己的控制器，甚至有可能使更多的实验，与更多的核。而且，当然，梯度线圈可以用于本地地球磁场在教学实验室样品在显着更均匀。这反过来，使细胞核内所有部位的样品以相同的速率进动，产生一个自由感应衰减（FID）的内在的罪自旋相互作用ŧ
2次，而不是由磁场不均匀性的限制。因此，现在的信号的地点曾经使用太小成为可行的实验地点。
渐变/场线圈系统最初是由卡尔文学院教授大卫·Baak要与他TeachSpin EFNMR1-A。一旦我们看到它在行动，我们知道我们不得不做出普遍。凡Baak博士合作，我们已经创建了一个强大的设备可以用在许多层面上。凡Baak博士导师和学生写了详细的说明书。我们相信，地球磁场核磁共振，这个线圈系统，是毫无疑问，学生开始他们的研究磁共振的最佳工具。它有没有平等的！
梯度线圈：
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均质本地地球的磁场
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允许测量自旋-自旋弛豫（T 2）
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证明一维核磁共振成像（MRI）
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（和声音）产生可观察自旋回波
亥姆霍兹线圈：
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允许绝对测量磁核MOMEMENTS的
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提供31 P，2小时原子核的实验田
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定量SHOW磁场添加作为载体
Introduction
Gradient Coils:
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Homogenize Local Earth's Magnetic Field
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Permit Measurement of Spin-Spin Relaxation (T2)
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Demonstrate One-Dimensional NMR Imaging (MRI)
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Generate Observable (and Audible) Spin-Echoes
Helmholtz Coils:
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Permit Absolute Measurement of Nuclear Magnetic Moments
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Provide Fields for Experiments on 31P and 2H Nuclei
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Show Quantitatively that Magnetic Fields Add as Vectors
The Earth’s Field Gradient/Field Coil System (EFGFC1-A) is a valuable addition to the Earth’s Field Nuclear Magnetic Resonance (EFNMR1-A) apparatus. Although the EFNMR1-A offers a long list of experiments that can be performed in liquids that contain either hydrogen or fluorine, these Gradient/Field Coils, with their controller, make possible even more experiments, with more nuclei. And, of course, the Gradient Coils can be used to make the local earth's magnetic field in the teaching laboratory significantly more homogenous over the sample. This, in turn, allows the nuclei in all parts of the sample to precess at the same rate, producing a free-induction decay (FID) limited by the intrinsic sin-spin interaction T
2, rather than by the magnetic field inhomogeneity. As a result, locations in which signals were once too small to use now become viable experimental locations.
The Gradient/Field Coil System was initially developed by Professor David Van Baak of Calvin College to be used with his TeachSpin EFNMR1-A. Once we saw it in action, we knew we had to make it universally available. Collaborating with Dr. Van Baak, we have created a robust apparatus that can be used on many levels. Dr. Van Baak has written the detailed instruction manual for both the instructor and the students. We believe that the Earth's Field NMR, with this coil system, is without doubt, the best instrument for students beginning their study of magnetic resonance. It has no equal!
GRADIENT COILS:
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HOMOGENIZE LOCAL EARTH'S MAGNETIC FIELD
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PERMIT MEASUREMENT OF SPIN-SPIN RELAXATION (T2)
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DEMONSTRATE ONE-DIMENSIONAL NMR IMAGING (MRI)
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GENERATE OBSERVABLE (AND AUDIBLE) SPIN-ECHOES
HELMHOLTZ COILS:
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PERMIT ABSOLUTE MEASUREMENTS OF NUCLEAR MAGNETIC MOMEMENTS
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PROVIDE FIELDS FOR EXPERIMENTS ON 31P, 2H NUCLEI
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SHOW QUANTITATIVELY THAT MAGNETIC FIELDS ADD AS VECTORS
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