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3He正比计数管是中子探测器，是以3He气体为工作气体的正比计数管，一般为圆柱形管。它是基于3He(n, p)T核反应法的中子探测器，反应能为0.765MeV，热中子反应截面为（5333±7）b，中子能量在0.001eV~0.03eV范围内探测效率遵从1/v定律。它的主要优点是中子探测效率高，3He是惰性气体无负电性。我公司可根据用户需求，提供国内外各种型号规格的3He正比计数管。
| 类型 | 最大长度(英寸/毫米) | 最大直径(英寸/毫米) | 推荐的工作电压(伏) |
|---|---|---|---|
| 252152 | 7.35/186.7 | 1.0/25.4 | 1000 |
| 252139 | 3.46/87.8 | 1.0/25.4 | 1100 |
| 252130 | 20.66/524.8 | 1.0/25.4 | 1150 |
| 252129 | 6.60/167.64 | 1.0/25.4 | 700 |
| 252113 | 6.6/167.64 | 1.0/25.4 | 900 |
| 252111 | 9.34/237.24 | 1.0/25.4 | 1200 |
| 252108 | 11.25/285.75 | 1.0/25.4 | 1950 |
| 251106 | 5.12/130.0 | 0.75/19.05 | 900 |
| 251101 | 7.87/200.0 | 0.5/12.7 | 1200 |
| 25311 | 8.25/209.55 | 2.0/50.8 | 1650 |
| 25288 | 22.66/575.6 | 1.0/25.4 | 1150 |
| 25285 | 7.09/180.09 | 1.0/25.4 | 1250 |
| 25281 | 5.09/129.29 | 1.0/25.4 | 1400 |
| 25275 | 13.38/339.85 | 1.0/25.4 | 1800 |
| 25261 | 9.34/237.24 | 1.0/25.4 | 1260 |
| 25193 | 3.00/76.2 | 0.75/19.05 | 1050 |
| 25192 | 7.43/188.7 | 0.81/20.6 | 1000 |
| 25190 | 6.06/153.9 | 0.63/16.0 | 750 |
| 25188 | 3.91/99.3 | 2.00/50.8 | 850 |
| 25185 | 2.44/61.9 | 0.63/16.0 | 750 |
| 25183 | 2.09/53.1 | 0.75/19.1 | 1080 |
| 25177 | 6.06/153.9 | 0.63/16.0 | 850 |
| 25169 | 4.41/111.9 | 0.5/12.7 | 1000 |
| 25167 | 8.99/228.2 | 0.50/12.7 | 1250 |
| 25163 | 6.84/173.8 | 0.50/12.7 | 1400 |
| 25143 | 6.24/158.4 | 0.50/12.7 | 1400 |
| 25141 | 6.64/168.66 | 0.63/16.0 | 630 |
| 25139 | 6.64/168.6 | 0.75/19.05 | 650 |
| 25138 | 10.06/255.52 | 0.5/12.70 | 1750 |
| 25133 | 6.04/153.42 | 0.5/12.70 | 1200 |
| 25128 | 6.45/163.83 | 0.75/19.05 | 700 |
| 25124 | 14.02/356.11 | 0.5/12.7 | 1750 |
| 25026 | 2.21/56.2 | 0.38/9.5 | 1300 |
| 25019 | 3.00/76.2 | 0.38/9.5 | 850 |
| 2531 | 11.63/295.4 | 2.0/50.8 | 1950 |
| 2528 | 11.34/288.04 | 1.0/25.4 | 1250 |
| 2527 | 15.23/386.84 | 1.0/25.4 | 2200 |
| 2525 | 11.34/288.04 | 1.0/25.4 | 2200 |
| 2523 | 15.55/394.97 | 1.0/25.4 | 4000 |
| 2522 | 9.34/237.24 | 1.0/25.4 | 4600 |
| 2521 | 13.55/344.17 | 1.0/25.4 | 3500 |
| 2520 | |||
| 2517 | 3.7/93.98 | 0.5/12.7 | 1200 |
| 2513 | 4.38/111.25 | 0.5/12.7 | 1000 |
| 2511 | 8.44/214.38 | 0.5/12.7 | 3000 |
| 2508 | 7.05/179.1 | 0.56/14.2 | 1900 |
| 253 | 11.5/292.1 | 2.0/50.8 | 1300 |
| 252 | 11.20/284.5 | 1.0/25.4 | 1150 |
| 251 | 5.37/136.4 | 0.5/12.7 | 1000 |
| 250 | 51.13/1298.7 | 0.75/19.05 | 850 |
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