Harwell琥珀色3042剂量计,  

用于测量辐射剂量的Harwell琥珀色3042剂量计

1、材料：单批琥珀色3042剂量计由一块聚甲基丙烯酸甲酯板材制作。

2、尺寸：30mm×11mm。厚度3±0.55mm

3、测量重复性：同批剂量计，在不均匀度小于±1%的辐照场中同时辐照，剂量范围在1-10kGy用603nm波长测量，剂量范围在10-30kGy用651nm波长测量，其吸光率测量的变异系数小于2.5%。

4、校准能力：在校准范围内，所有吸光率测量数据的平均值与使用zui小二乘拟合的四阶多项式的数据相比，误差在3%以内。

5、溯源性：Harwell剂量计的校准，溯源到英国国家物理实验室吸收剂量标准。

          与英国国家物理实验室相互比较来验证每批剂量计的校准性能。

6、保质期：从发售日期起10年内。

7、包装：用聚酯/铝箔/聚酯/聚乙烯材料制成的带有标签的小袋密封包装，每箱1000片。

Harwell Amber 3042

Harwell Amber 3042 Dosimeters

Amber 3042 are made from radiation-sensitive poly-methylmethacrylate （pmma） in the form of optically transparent pieces individually sealed in laminate sachets. They darken when irradiated, and the radiation-induced darkening, accuray measurable by means of a spectrophotometer, is a function of the radiation dose absorbed.

Dose Range

Amber 3042 has a functional dose range of 1 kGy to 30 kGy which makes it idea for low dose irradiation processes.

Material

The Amber 3042 is made from single batches of cast sheets of poly-methylmethacrylate （pmma）

Dimensions

Harwell Dosimeters then cut the sheets down into plaques of 30mm x 11mm with a thickness of 3mm （+/- 0.55mm）

Packaging

After * inspection the dosimeters are packaged into sealed sachets made of polyester/aluminium foil/polyester/polyethylene laminate. With each sachet being labeled with a unique bar coded label.

Packed 1,000 per carton.

（Packing to defined AQL's checked to BS6001 （ISO 2859-1）, single normal inspection, level II.）

Measurment reproducibility

Coefficient of variation of specific absorbance measurements on sets of dosimeters for the batch, simltaneously irradiated together, in a gamma radiation field uniform within +/- 1%, is 2.5% over the entire calibrated range, 1 to 30 kGy.

Calibration quality

Over the calibrated range, all mean specific absorbance data points thus obtained are within 3% of a fourth-order polynomial least-squares fit to the data.

Shelf-life

Ten years from the date of release.

Traceability

Harwell calibration is traceable to the UK standard of absorbed dose at the National Physical Laboratory （NPL）.